Will any North American country have a CDC travel advisory issued in October 2026?

- [2026-10-11] The live CDC Travel Health Notices page (wwwnc.cdc.gov/travel/notices), fetched directly today, shows **no North American country with a notice newly issued in October 2026**. The most recent North America-related Level 1 notices are 
Hepatitis A in Canada, June 04, 2026
 (Manitoba outbreak) and Rocky Mountain Spotted Fever in Mexico, dated December 23, 2025 (per the fetched page content). https://wwwnc.cdc.gov/travel/notices
- [2026-10-02] The only October update visible on the CDC THN page so far is a refresh (not a "New" notice) to the pre-existing Global Dengue notice, whose destination list includes North American-region entries such as Costa Rica, Panama, Cuba and Ecuador; this is a page "last reviewed" date, not a newly issued THN. https://wwwnc.cdc.gov/travel/notices
- [2026-10-08] CDC's Ebola Bundibugyo situation summary (DRC) was updated, and a THN for that outbreak exists, but it does not involve a North American country. https://www.thetraveler.org/new-us-travel-warning-cites-rising-global-health-risks/
- [2026-10-09] CDC's national measles surveillance page was updated October 9, 2026, reflecting continued US case growth, but this is a domestic data tracker, not a THN for a North American country. https://www.cdc.gov/measles/data-research/index.html
- [2026-09-03] Separate reporting noted 
"As of September 3, 2026, CDC's national tally listed 3,134 confirmed cases for the year"
 for US measles, underscoring an active outbreak environment that could still prompt a future THN, but no US/Mexico/Canada-specific THN has been issued as of the fetch date. https://www.thetraveler.org/measles-travel-warning-what-travelers-need-to-know-in-2026/
- [2026-08-03] Per the question's own framing, the last *new* North American THN was Chikungunya in Nicaragua (Aug 3, 2026); this notice no longer appears on the live page fetched today, suggesting it may have aged off the active list, consistent with CDC's practice of eventually removing resolved notices.
- [2026-10-09/10] Canada's own Global Affairs travel advisory for Mexico was refreshed (Oct 9–10, 2026) for hurricanes Simon/Isaias and crime risk, but this is a Canadian government advisory, not a CDC THN, and falls outside the CDC resolution source. https://travel.gc.ca/destinations/mexico
- [2026-10-10] Independent travel-industry reporting on North American storm risk (Hurricane Isaias, Hurricane Simon, Tropical Storm Rachel) does not reference any CDC THN issuance for Mexico, the US, or Canada. https://www.travelandtourworld.com/news/article/h7je8gjjr7d9/
- [2025-12-18] For context on how CDC THNs on this page evolve, examples from earlier 2025/2026 (Chagas, RMSF, Salmonella Newport in Mexico) show CDC periodically issues low-level (Level 1) notices for Mexico, indicating a plausible but not currently realized pathway to a "Yes" resolution before month's end.

BOTTOM LINE: As of October 11, 2026, the CDC Travel Health Notices page shows no North American country (US, Canada, Mexico, Central America, or Caribbean as CDC classifies them) with a notice newly issued in October; the most recent North America entries date to June 2026 (Canada) and December 2025 (Mexico), and active global health events (DRC Ebola, Yemen malaria) are driving current CDC attention rather than North America — though ongoing measles outbreaks in Mexico/Canada and hurricane-related conditions in Mexico are plausible triggers for a new notice before the question closes.

NOT FOUND: No evidence of any CDC THN for a North American country dated between October 1–11, 2026; no official CDC press release or newsroom statement announcing plans for a new North America-specific notice in October 2026.

- [2026-10-11 current snapshot] CDC's live Travel Health Notices page shows the most recent North-America-linked entries as: Chikungunya in Nicaragua (originally New Aug 3, 2026, updated Sept 3, 2026), Hepatitis A in Costa Rica (New Sept 18, 2026, per archived crawl), Diphtheria in Haiti (New June 25, 2026), Chikungunya in Costa Rica (first posted ~mid-2026, updated July 30, 2026), Hepatitis A in Canada (New June 4, 2026), Rocky Mountain Spotted Fever in Mexico (New Dec 23, 2025), and Chikungunya in Cuba and Oropouche in the Americas (Cuba/Panama) from late 2025 — https://wwwnc.cdc.gov/travel/notices

- [2026-10-11] As of question-authorship, no October-2026-dated notice yet exists for a North American country; the newest listed items on the live CDC page are dated September 18–23, 2026 (Global Polio update, Yellow Fever in Colombia update) — https://wwwnc.cdc.gov/travel/notices

- [2025-12-05/08] CDC issued a Level 2 chikungunya notice for Cuba in December 2025, one of several "4 countries" alerts reported by press at the time — https://www.foxnews.com/us/cdc-warns-americans-traveling-4-countries-outbreak-untreatable-mosquito-disease

- [2025-09-18] CDC's Oropouche in the Americas notice (covering Brazil, Cuba, Panama, Peru) was a North-America-touching entry from fall 2025, illustrating the recurring Caribbean/Central American disease-notice pattern — https://wwwnc.cdc.gov/travel/notices

- [2026-06-04] 
Manitoba, Canada was reported as experiencing a hepatitis A virus (HAV) outbreak, contagious and spreading through close person-to-person contact and contaminated food or drink
, generating a new Level 1 THN for Canada — https://wwwnc.cdc.gov/travel/notices

- [2026-06-25] 
An outbreak of diphtheria in Haiti prompted a notice, noting vaccination against diphtheria is essential to protect against the disease
 — https://wwwnc.cdc.gov/travel/notices

- [2026-08-03] A new Level 2 Chikungunya notice for Nicaragua was issued (cited by the question itself as the most recent "new" North American notice at authorship) — https://wwwnc.cdc.gov/travel/notices

- [2026-07-30] 
An outbreak of chikungunya in northwest Costa Rica (Alajuela, Heredia, Guanacaste, parts of Puntarenas and San Jose)
 remained an active Level 2 THN, reviewed/updated July 30, 2026 — https://wwwnc.cdc.gov/travel/notices/level2/chikungunya-costa-rica

- [2025-12-23] A new Level 1 notice was posted for Rocky Mountain Spotted Fever in northern Mexico border states (Baja California, Sonora, Chihuahua, Coahuila, Nuevo León) — https://wwwnc.cdc.gov/travel/notices

- Reference-class tally: counting distinct "New" North-America-linked THNs (Mexico, Canada, Caribbean, Central America) over the trailing ~13 months (Sept 2025–Sept 2026) yields roughly 7–8 separate new postings (Oropouche/Cuba-Panama Sept 2025, Cuba chikungunya Dec 2025, Mexico RMSF Dec 2025, Costa Rica chikungunya mid-2026, Canada hepatitis A June 2026, Haiti diphtheria June 2026, Nicaragua chikungunya Aug 2026, Costa Rica hepatitis A Sept 2026), i.e., roughly one new NA-region notice every 5–7 weeks on average, with a clear acceleration (about one per month) from April through September 2026.

- No dedicated prediction markets, pollsters, or expert forecasts on CDC THN issuance frequency were found; this is a low-profile administrative/epidemiological process, not a tracked forecasting market.

BOTTOM LINE: Historically CDC has posted a brand-new North-America-region Travel Health Notice roughly every 5–7 weeks over the past year, with the pace quickening to about once a month since spring 2026 (chikungunya spreading through Central America/Caribbean, plus hepatitis A and diphtheria outbreaks); this outside-view cadence suggests that, absent any special block on new postings, a fresh October 2026 North American notice would be more likely than not, though no notice had yet appeared for October as of the Oct 11 snapshot.

NOT FOUND: No explicit historical count/dataset of "North America" THNs per month published by CDC; no betting markets, expert panels, or formal base-rate studies specifically on CDC THN issuance cadence; could not confirm the exact original "New" posting date for the Costa Rica chikungunya notice (only the July 30, 2026 "last reviewed" update date was available).

**Key causal drivers for whether CDC issues a new North American THN in October 2026:**

- [2026-10-11] The live CDC Travel Health Notices page, fetched directly, shows the newest entries are still 
last reviewed October 02, 2026
, with the most recent Level 2 postings being Colombia yellow fever (Sept 18) and Nicaragua chikungunya (Sept 3) — confirming no North American country has a notice newly dated in October as of question-open, consistent with colleagues' snapshot. https://wwwnc.cdc.gov/travel/notices

- [2026-10-09] PAHO's director-level warning is the single strongest live trigger: a new regional risk assessment finds 
55,792 confirmed measles cases and 77 deaths were reported in 17 countries and territories in the Region between 4 January and 3 October 2026, a 4.8-fold increase in cases compared with the same period in 2025
, with 
Guatemala reporting the largest number of cases, followed by Mexico, the United States, Peru and Canada, together accounting for 99.5% of confirmed cases in the Region
 — a near-direct match to North American geography (CDC's own definition includes Mexico/Central America/Caribbean). https://paho.org/en/news/9-10-2026-paho-assesses-risk-measles-spread-very-high-ahead-religious-mass-gatherings-americas

- [2026-10-09] PAHO explicitly ties this to imminent travel risk, noting 
several religious mass gatherings in South America are expected to increase national and international travel across the Americas in the coming months, with the risk of measles spread across the Region remaining very high
 — CDC's own THN criteria list "mass gathering events that can lead to disease outbreaks" as a qualifying trigger, giving a concrete mechanism for a new or upgraded North American notice this month. https://paho.org/en/news/9-10-2026-paho-assesses-risk-measles-spread-very-high-ahead-religious-mass-gatherings-americas

- [2026-10-11, standing notice] Countervailing factor: CDC already maintains a long-running Level 1 "Global Measles" THN (originally dated May 28, 2025) that explicitly covers Guatemala and, by extension, other high-case countries like Mexico and the US; Guatemala's CDC destination page as read in October 2026 still shows only this pre-existing notice, no new country-specific escalation. This means the PAHO-driven measles surge may simply update the existing global notice rather than generate a "newly issued" North American entry, which is what the resolution criteria require. https://wwwnc.cdc.gov/travel/destinations/traveler/none/guatemala

- [2026-10-06] A distinct, genuinely new epidemiological event with CDC-notice potential: WHO was notified that 
this is the first time that locally acquired transmission of chikungunya has been detected in the WHO Americas Region
 on the Caribbean island of Saint Martin/Sint Maarten, with 
health authorities on both the French and Dutch sides cooperating closely to respond to this outbreak
 — a brand-new geography CDC has not yet posted a notice for, and "sporadic cases of a disease in an unusual or new geographic location" is one of CDC's own stated THN triggers. https://infectioncontroltoday.com/view/who-notified-chikungunya-disease-caribbean-isle-saint-martin

- [2026-09-15] Working against a fresh chikungunya notice elsewhere in the hemisphere: regional surveillance shows the broader Americas chikungunya wave is easing, with 
incident cases reported in Brazil & Costa Rica with trends declining; as of September 15, there have been 198,591 chikungunya cases, of which 74,841 are confirmed, and 87 deaths reported in the Americas during 2026, with 2,162 incident cases and 962 confirmed cases added since the previous update
 — a slowing trajectory that reduces (though does not eliminate) the odds of a new Central American/Caribbean chikungunya THN this month. https://globalhealthreports.health.ny.gov/sites/default/files/2026-09/Global%20Health%20Update%209.17.26%20-%20Final.pdf

- [2026-10-11] A natural-disaster pathway exists institutionally but is not currently triggered: CDC maintains a standing notices infrastructure that includes an "earthquake-hurricane-mexico" alert category (URL structure confirms this notice type exists), and CDC's own Yellow Book flags 
Beach and ocean exposures, Dengue, Malaria, Rickettsioses, Valley fever
 plus hurricane-driven infrastructure damage as recurring Mexico risks, but no such alert is currently live as of the Oct 11 page fetch despite active Hurricanes Isaias and Simon — meaning a sufficiently damaging landfall before Nov 1 (CDC's trigger #3: "infrastructure damage that would limit healthcare services availability") remains a plausible but unconfirmed pathway. https://www.cdc.gov/yellow-book/hcp/americas-caribbean/mexico.html

- [2026-07-07] Historical cadence confirms measles has already been a recurring North American THN trigger this year even before the October PAHO alert, with regional trackers noting Mexico led 2026 case counts at 
almost 11,000, followed by Guatemala, over 6,000, the United States over 2,000, and Canada over 1,000
 as of July — showing the underlying outbreak (not just the October PAHO alert) has been building for months without yet producing a new country-specific North American THN, suggesting CDC's bar for escalating beyond the global notice is relatively high. https://www.travelvax.com.au/travel-health-alerts/world-travel-health-alerts-july-2026-week-2

BOTTOM LINE: The clearest live mechanism for a "Yes" resolution is CDC escalating its standing global measles notice into a country-specific one for Mexico, Guatemala, or Canada in response to PAHO's Oct 8-9 "very high risk" assessment tied to South American mass gatherings, or CDC adding a new chikungunya notice for the newly-affected Saint Martin/Sint Maarten; a hurricane-driven disaster notice for Mexico is institutionally possible but not yet triggered. Working against "Yes" is that CDC has so far folded ongoing North American measles activity into its existing (non-October) global notice rather than issuing new country-specific postings, and chikungunya trends in the hemisphere are declining.

NOT FOUND: No CDC announcement or internal planning document indicating an imminent new North American THN; no confirmation of whether Saint Martin/Sint Maarten falls under CDC's "North America" THN classification versus a separate Caribbean/territorial listing; no post-Oct 11 landfall/damage report for Hurricanes Isaias or Simon confirming CDC disaster-notice criteria have been met.

No dedicated prediction market, poll, or analyst forecast specifically addressing "will a North American country get a new CDC Travel Health Notice in October 2026" was found. This is a narrow, low-salience question that does not appear to be tracked by Polymarket, Kalshi, or Metaculus as a standalone market. However, adjacent markets and the primary CDC source provide useful context:

- [2026-01-19 to 2026-12-31] Polymarket's general market "CDC issues Level 3 warning by December 31?" (covering any disease, any country, not North-America-specific) was priced at 
"Ended: Dec 31" with ">99% chance"
, reflecting trader confidence that CDC maintains an active pipeline of escalating travel notices throughout 2026 — https://polymarket.com/event/cdc-issues-level-3-warning-by-december-31
- [2026-01-19] That same Polymarket market's context notes reasoned that 
"trader consensus centers on sustained measles transmission across multiple U.S. states and emerging international risks," with "active Level 2 notices for Ebola and chikungunya that demonstrate the agency's threshold for escalation when limited precautions exist"
 — https://polymarket.com/event/cdc-issues-level-3-warning-by-december-31
- [undated, ~145 days old] A separate Polymarket market on a Level 4 warning noted 
"No CDC Level 4 Travel Health Notices currently exist, as confirmed by official monitoring data showing no destinations meeting the extreme-risk threshold"
, indicating markets track the CDC notices page closely as the authoritative resolution source — https://polymarket.com/event/cdc-issues-level-4-warning-by-december-31-647
- [2026-10-02, last reviewed] The CDC's own Travel Health Notices page, the sole resolution source per the question's fine print, shows Level 1 entries for Costa Rica, Ecuador (incl. Galápagos), and Panama under 
"Level 1 - Practice Usual Precautions... Kenya, Malaysia, Sri Lanka, Bangladesh, Costa Rica, Marshall Islands, Vanuatu, Cuba, Ecuador, including the Galápagos Islands, Panama... Global Dengue... Updated Global Dengue October 02, 2026"
 — https://wwwnc.cdc.gov/travel/notices
- [undated snapshot, ~October 2026] The live CDC notices page lists Level 2 entries including 
"An increased number of cases of yellow fever have been reported in Colombia... Updated Yellow Fever in Colombia September 18, 2026"
 and 
"There is an outbreak of chikungunya in Nicaragua... Updated Chikungunya in Nicaragua September 03, 2026"
 — both South/Central American but neither is a fresh October 2026 North American entry — https://wwwnc.cdc.gov/travel/notices
- [2026-06-19] A historical pattern-tracker (FFF Enterprises newsletter) shows CDC has repeatedly added North American entries in recent months, e.g., 
"the CDC lists Ituri, Nord-Kivu... the CDC listed the following areas to its Level 1 THN this month... Manitoba, Canada, due to a hepatitis A virus (HAV) outbreak on June 4"
, illustrating a recurring base rate of North American THN issuances roughly every 1-2 months (Mexico RMSF Dec 2025, Canada hepatitis A June 2026, Nicaragua chikungunya Aug/Sep 2026) — https://www.fffenterprises.com/news/articles/fff-respiratory-newsletter-2026-06-19.html
- [date unclear, ~2026] A third-party outbreak tracker lists prior North-America-adjacent CDC notices such as 
"Level 2 - Chikungunya in French Guiana Level 2 - Chikungunya in French Guiana on June 4, 2026... There is an outbreak of chikungunya in French Guiana"
, underscoring the Americas region's elevated mosquito-borne disease activity in 2026 that has repeatedly generated new THNs — https://worldtravelcare.net/cdc-travel-health-notices/

BOTTOM LINE: No market or forecaster directly prices this specific North-America/October-2026 question, but adjacent Polymarket markets treat any new CDC escalation (Level 3+) as near-certain (>99%) over 2026, and the observed base rate of North American THN updates (Mexico, Canada, Nicaragua, French Guiana, Colombia) every 1-2 months throughout 2025-2026 implies elevated background likelihood of another North American notice appearing in October 2026, even absent a notice already confirmed post-October 11.

NOT FOUND: No Polymarket, Kalshi, or Metaculus market specifically tracking "North American country CDC THN in October 2026"; no explicit probability estimate or forecaster commentary isolating this exact resolution criterion; no confirmation (as of the searches performed) of any new North American THN dated after October 11, 2026.

YES means: the CDC Travel Health Notices (THN) page lists at least one brand-new ("New," not merely "Updated") notice for a North American country — i.e., the US, Canada, Mexico, Central America, or the Caribbean, per CDC's regional classification — bearing an issue date between October 1 and October 31, 2026.

- [2026-10-10] CDC's own Travelers' Health landing page, fetched live, lists its three most recent top-line notices as "Updated Global Dengue October 02, 2026," "New Hepatitis A in Costa Rica September 18, 2026," and "New Paratyphoid Fever in Yemen August 26, 2026" — confirming a North American-region country (Costa Rica) received a brand-new THN as recently as September 18, 2026, just 23 days before the question's open date, which is a tighter and more recent gap than the Aug 3 Nicaragua example cited in the question framing. https://wwwnc.cdc.gov/travel

- [2026-10-09] CDC's national measles tracker shows 4,080 confirmed US measles cases for 2026 as of October 8, with 18–26 cases specifically tied to international visitors, indicating the outbreak CDC is already monitoring via a standing Level 1 Global Measles notice remains very active into October, a plausible trigger for an updated/escalated country-specific entry. https://www.cdc.gov/measles/data-research/index.html

- [2026-10-11] Mexico's ongoing measles emergency — over 10,920 cases and 13 deaths reported by mid-2026 per the UN/PAHO, swelling toward 18,440 cases by late June per Mexico's Ministry of Health — remains unresolved, and Mexico already carries a Level 1 Global Measles THN that CDC could at any time convert into a dedicated country-specific or escalated notice given continued transmission. https://news.un.org/en/story/2026/06/1167642

- [cadence evidence] Tallying the last 13 months of North America-linked "New" THNs (Oropouche/Cuba-Panama Sept 2025, Cuba chikungunya Dec 2025, Mexico RMSF Dec 2025, Canada hepatitis A June 2026, Haiti diphtheria June 2026, Nicaragua chikungunya Aug 2026, Costa Rica hepatitis A Sept 18 2026) shows a new North American entry roughly every 4-7 weeks, with the Sept 18 Costa Rica notice meaning the "expected" next new entry — by simple interval extrapolation — falls squarely within the mid-to-late October window the question covers.

- [2026-10-09] A Federal Register notice on the DRC Ebola outbreak confirms CDC is actively issuing and escalating new THNs on a rolling, almost weekly basis in 2026 (South Kivu added May 22, Haut-Uélé/Tshopo added Aug 4, new Order issued Sept 11), demonstrating the agency's current operational tempo for THN issuance is high, increasing the odds some disease signal (dengue, chikungunya, or RMSF resurgence) in Mexico, Central America, or the Caribbean crosses CDC's posting threshold before November 1. https://www.govinfo.gov/content/pkg/FR-2026-09-16/pdf/2026-18948.pdf

- [2026-10-02] CDC's live Global Dengue Level 1 notice — covering Costa Rica, Cuba, Panama, and Ecuador among others — was refreshed October 2, 2026 and explicitly states dengue is a year-round risk that "outbreaks commonly occur every 2-5 years," meaning any single country on that already-elevated list (several of which are North American/Caribbean) could be upgraded to its own standalone "New" notice if case counts spike further during October's hurricane season. https://wwwnc.cdc.gov/travel/notices

- [2026-10-09/10] Hurricane Isaias and Hurricane Simon are actively affecting the Gulf and Mexico's Pacific coast in October 2026; CDC has a documented history of issuing THNs for "natural and human-made disasters with severe environmental health risks" per its own THN criteria, giving a second, independent mechanism (storm-driven infrastructure/health risk) by which a new North American notice could be posted this month. https://wwwnc.cdc.gov/travel/notices.htm

BOTTOM LINE: The strongest YES path rests on CDC's demonstrated high-frequency cadence of new North American THNs (most recently Costa Rica hepatitis A on Sept 18, 2026, just three weeks before question open) combined with multiple live, unresolved regional threats — the Mexico/US measles surge, active Caribbean/Central American dengue and chikungunya circulation, and October hurricane activity — any one of which has historically prompted a fresh CDC posting within a similar time frame.

NOT FOUND: No CDC press release or THN dated after October 1, 2026 for any North American country as of this search; no official CDC statement signaling an imminent new notice; no confirmation of the exact original (non-"updated") posting date for several standing Level 1 entries (e.g., Mexico's Global Measles notice).

YES means: the CDC Travel Health Notices page (wwwnc.cdc.gov/travel/notices) shows at least one notice for a US, Canadian, Mexican, Central American or Caribbean destination carrying a "New" issuance date in October 2026 (not merely an "Updated" refresh of an existing notice).

- [2026-10-11] As already fetched directly, the live CDC THN page's most recent North America-linked entries are dated June 4, 2026 (Canada hepatitis A) and December 23, 2025 (Mexico RMSF); no entry carries an October 2026 "New" tag as of question open. https://wwwnc.cdc.gov/travel/notices
- [2025-12-05] A historical snapshot of the CDC travel homepage shows that in the Oct–Dec 2025 window, the only "New" top-listed notices were Chikungunya in Bangladesh and Chikungunya in Sri Lanka (Dec 5, 2025) and Global Polio (Nov 25, 2025) — none North American — indicating CDC's "New" slots were filled by Asian/global items, not NA ones, for that stretch. https://wwwnc.cdc.gov/travel/page/new-cdc-travelers-health-website
- [2025-04-15 to 2025-12-23] The last North America-adjacent "New" THN before that was Yellow Fever in South America (Bolivia/Brazil/Colombia/Peru, April 15, 2025) and the next CDC North-America-specific new posting was not until Rocky Mountain Spotted Fever in Mexico on December 23, 2025 — an eight-month gap with zero new North American THNs, showing the posting cadence is lumpy with long dry spells, not a steady monthly drumbeat. https://wwwnc.cdc.gov/travel/notices/level1/yellow-fever-vaccine-adverse-effects
- [2025-10-01 to 2025-11-12] The U.S. federal government underwent a 43-day shutdown spanning all of October 2025 (the longest in U.S. history), a period that coincides with the eight-month North American THN gap noted above, suggesting shutdown-related staffing/administrative disruption can suppress new notice issuance during exactly the kind of month being forecast here. https://www.traveltourister.com/news/us-government-shutdown-october-2026-tsa-faa-flights-airport-queues-travel-guide/
- [2025-12-21] Despite Hurricane Melissa devastating the Caribbean in October 2025, CDC's resulting health guidance for Cuba, Puerto Rico and Jamaica did not surface as a formal "New" THN until roughly two months later (Dec 21, 2025), and even then it was framed as general dengue/Zika/respiratory guidance rather than a storm-specific new notice — showing CDC's disaster-triggered NA postings lag far behind the triggering event and often don't materialize as discrete "New" THNs at all. https://www.travelandtourworld.com/news/article/caribbean-travel-under-scrutiny-haiti-joins-cuba-jamaica-and-puerto-rico-in-facing-us-security-and-health-warnings-following-hurricane-aftermath-and-rising-illnesses/
- [2026-09-02] A continuing resolution signed September 2, 2026 funds the government only through December 11, 2026, meaning CDC publishing operations are nominally intact for all of October 2026 — removing the shutdown-suppression mechanism seen in October 2025, but this also means CDC attention in October 2026 is instead absorbed by non-NA crises (DRC/Uganda Ebola Bundibugyo, Saudi Arabia missile-related alerts, South Africa unrest) per the AskNews block, continuing status-quo inertia toward non-NA postings. https://www.traveltourister.com/news/us-government-shutdown-october-2026-tsa-faa-flights-airport-queues-travel-guide/
- [2026-10-02] The only October 2026 change visible on the live CDC page so far is a "last reviewed" refresh of the pre-existing Global Dengue notice (not a "New" issuance), confirming CDC's own distinction between "Updated" and "New" labels — and only "New" labels would satisfy strict resolution wording. https://wwwnc.cdc.gov/travel/notices
- [2026-10-08/09] CDC's active bandwidth in the Oct 1–11 window is demonstrably allocated to the DRC/Uganda Ebola Bundibugyo outbreak (updated Aug 28, 2026 THN) and domestic measles tracking, not to any North American disease cluster, reinforcing that no NA trigger is currently in CDC's queue. https://www.thetraveler.org/new-us-travel-warning-cites-rising-global-health-risks/

BOTTOM LINE: The literal CDC "New" vs. "Updated" distinction, an eight-month historical precedent of zero new North American THNs (April–December 2025) coinciding with the last October government shutdown, and the two-month-plus lag CDC has shown even for major Caribbean hurricane events, together support a real possibility that October 2026 passes with only "Updated" refreshes (Global Dengue, etc.) rather than a qualifying "New" North American notice, keeping NO firmly in play despite the sheet's own base-rate framing.

NOT FOUND: No CDC internal staffing or workload report for October 2026 specifically; no confirmation of whether CDC plans any hurricane-specific (Isaias/Simon) THN for Mexico or Central America; no official CDC statement distinguishing why some NA outbreaks (e.g., ongoing Mexico/Canada measles) have not yet triggered a THN as of October 11, 2026.

13 AskNews articles (newest first; 6 from the last 48 h, 10 from the archive). Summaries are AskNews's own; dates are publication dates.

[2026-10-10] China CDC Issues October 2026 Health Advisory on Respiratory, Vector-Borne, and Infectious Diseases
南方网 — https://news.southcn.com/node_cf18aa799b/a88cd5b1bc.shtml
  - On October 10, 2026, the Chinese Center for Disease Control and Prevention (China CDC) issued a health protection advisory for October 2026.
  - The advisory identifies six key disease categories requiring vigilance: respiratory infections (novel coronavirus and influenza), mosquito-borne diseases (dengue, chikungunya, Zika), Ebola virus disease, monkeypox, severe fever with thrombocytopenia syndrome (SFTS), and common school/childcare outbreaks (hand-foot-and-mouth disease, chickenpox, norovirus).
  - Current data indicates the novel coronavirus is in a low-level epidemic phase, while influenza activity is rising in southern China, particularly in crowded settings like stations, aircraft, scenic spots, and banquets.
  - The China CDC recommends specific protective measures for each category, including maintaining hygiene, wearing masks in crowded areas, and ensuring high-risk groups (elderly, infants, pregnant women, chronic patients) receive flu vaccinations.
  - For mosquito-borne diseases, the advisory details symptoms such as 'three pains' and 'three reds' for dengue and warns that Zika infection in pregnant women can cause microcephaly in newborns.
  - Travelers to Southeast Asia, Africa, or South America are advised to check local outbreaks and use repellents containing DEET, Picaridin, or IR3535.
  - Regarding Ebola, the advisory urges avoidance of high-risk regions and mandates 21 days of self-monitoring upon return.
  - For monkeypox, transmission via direct contact is highlighted, with recommendations to avoid close contact with suspected cases.
  - SFTS, transmitted by ticks, is noted as prevalent in spring and summer, with outdoor workers at higher risk.
  - Schools and childcare centers are instructed to enforce the 'seven-step handwashing method', ensure daily ventilation for at least 30 minutes, and exclude symptomatic children from attendance.

[2026-10-10] US Issues Travel Warning for South Africa as Anti-Immigration Protests Turn Violent in Durban and Soweto
Travel And Tour World — https://www.travelandtourworld.com/news/article/4ojhgcia36c6/
  - On October 9, 2026, the US Mission to South Africa issued a security alert urging American citizens to monitor anti-immigration protests in Durban and Johannesburg's Soweto township, where violence included the torching of at least 24 vehicles (14 in Durban, 10 in Soweto) and looting of foreign-owned businesses, according to Associated Press reports.
  - The unrest stemmed from tensions over asylum application procedures following a Constitutional Court ruling that asylum seekers cannot be denied access solely due to illegal entry.
  - The US Consulate General in Durban temporarily closed on October 9, 2026, due to the unrest in the central business district and Durban South.
  - While the US State Department's country-level advisory remains at Level 2 (Exercise Increased Caution) issued on May 27, 2025, the specific October 2026 alerts highlight localized security risks.
  - Statistics South Africa reported 10,498,506 overnight tourists in 2025, a 17.7% increase from 2024 and 2.6% above 2019 pre-pandemic levels, with tourism contributing 4.9% to GDP and supporting 953,981 jobs.
  - The article clarifies that while the unrest disrupts local movement and property, there is no confirmed evidence of nationwide airport closures, flight cancellations, or a general suspension of tourism services as of the publication date.

[2026-10-09] Canada Updates Kenya Travel Advisory: Ebola Alert and Security Warnings Issued in October 2026
Travel And Tour World — https://www.travelandtourworld.com/news/article/zfe9r1k2afi6/
  - Canada updated its official travel advisory for Kenya in October 2026, adding a specific Ebola disease monitoring alert following a confirmed imported case of the Bundibugyo virus.
  - According to the World Health Organization (WHO), the patient traveled from the Democratic Republic of the Congo via Uganda, arriving in Nairobi on 3 October 2026, testing positive, and dying on 5 October 2026.
  - While the WHO advises against blanket travel or trade restrictions, the Canadian government now recommends exercising a 'high degree of caution' across Kenya, with specific directives to avoid all travel or reconsider non-essential journeys in several high-risk zones.
  - These include Mandera, Wajir, and Garissa counties near the Somali border; designated areas of Lamu, Tana River, and parts of Kilifi counties due to kidnapping and targeted attacks; and areas within 110 kilometres of the South Sudan and Ethiopian borders in Turkana and Marsabit counties due to cross-border violence and terrorism.
  - In Nairobi, the advisory specifically warns against non-essential travel to Kibera, Eastleigh, Mathare, and the Central Business District due to crime.
  - The report also highlights risks regarding travel insurance coverage if visitors enter restricted areas, potential financial extortion and kidnapping linked to online meetings, and the need for secure transport arrangements.
  - Canadian authorities urge tourists to verify insurance policies, use reputable tour operators, and maintain strict digital and personal safety precautions.

[2026-10-09] Multiple Nations Update Travel Warnings for Saudi Arabia Amid Escalating Middle East Tensions
Travel And Tour World — https://www.travelandtourworld.com/news/article/rfppsg9gtjam/
  - As of October 9, 2026, escalating Middle East tensions have prompted multiple nations to issue updated travel warnings for Saudi Arabia.
  - Canada, Australia, the United Kingdom, the Netherlands, Germany, Sweden, New Zealand, and the United States have all advised their citizens to reconsider or avoid non-essential travel due to risks including missile attacks, drone activity, falling military debris, and potential airport closures.
  - Canada updated its advisory on October 8, 2026, citing missile and drone threats, specifically warning against non-essential travel nationwide while maintaining stricter restrictions for southern provinces near Yemen.
  - Australia updated its Smartraveller advisory on October 9, 2026, linking the deterioration to renewed Houthi military activity since July 2026, and advises avoiding Asir, Jazan, and Najran provinces.
  - The United Kingdom expanded its restrictions on October 8, 2026, to include Riyadh Province, Taif city, and Taif International Airport, alongside its existing ban on travel within 10 kilometers of the Yemeni border.
  - The Netherlands, Germany, Sweden, New Zealand, and the United States have similarly issued warnings, with Germany updating its guidance on October 2, 2026, and New Zealand and the US maintaining advisories from September 2026.
  - These advisories are recommendations rather than a collective travel ban, but they highlight significant risks to aviation infrastructure, energy facilities, and civilian populations.
  - Specific threats include attacks on airports in Abha, Jeddah, Jizan, Najran, and Riyadh, as well as the danger of falling debris from intercepted missiles.
  - Governments warn that travel insurance may become invalid if travelers ignore official advice, and emphasize the need for contingency planning.

[2026-10-09] October 2026 North American Storms Threaten Travel with Hurricanes Isaias and Simon
Travel And Tour World — https://www.travelandtourworld.com/news/article/h7je8gjjr7d9/
  - In October 2026, severe weather events are creating travel uncertainty across North America, specifically involving Hurricane Isaias in the Gulf region, Hurricane Simon near Mexico's Pacific coast, and Tropical Storm Rachel in the eastern Pacific.
  - According to the October 9 National Hurricane Center advisory, Hurricane Isaias is a Category 3 storm with sustained winds of approximately 120 mph, threatening US Gulf Coast states including Florida, Alabama, Mississippi, and Louisiana, with potential operational restrictions at airports in Pensacola, Panama City, Mobile, and Gulfport.
  - Hurricane Simon, with sustained winds of approximately 100 mph, poses risks to Mexican destinations in Jalisco, Colima, Nayarit, and Michoacán, including Puerto Vallarta.
  - Tropical Storm Rachel has sustained winds of approximately 50 mph and threatens Baja California and the southwestern US.
  - Airlines including American Airlines, Delta Air Lines, Southwest Airlines, and WestJet have issued travel flexibility policies for travel dates between October 9 and October 14, allowing eligible passengers to reschedule or rebook without change fees under specified conditions.
  - However, the article notes that the full extent of storm-related flight cancellations remains unconfirmed and that reliable cancellation totals require verified operational records.
  - The Federal Aviation Administration has highlighted potential thunderstorms and strong winds affecting major hubs like Orlando, Tampa, Miami, Fort Lauderdale, New York, Philadelphia, and Atlanta.
  - Passenger rights vary by country; US federal rules generally do not require cash compensation for weather-related cancellations, while Canada's Air Passenger Protection Regulations distinguish between disruptions within airline control and those caused by extreme weather.

[2026-10-09] Canada Issues Ebola Warning for Kenya Travel Following Imported Case
The Star — https://www.the-star.co.ke/news/2026-10-09-canada-issues-ebola-warning-for-travellers-to-kenya
  - On October 9, 2026, the Government of Canada issued an updated travel advisory for its citizens visiting Kenya following the confirmation of an imported Ebola case in Nairobi involving a traveller from the Democratic Republic of the Congo (DRC).
  - The Canadian government advises visitors to monitor for Ebola symptoms for 21 days after leaving Kenya, practice good hygiene, and avoid healthcare facilities in affected areas unless urgent medical attention is required. 'Monitor your health while in Kenya and for 21 days after you leave.
  - If you develop symptoms of Ebola disease, isolate yourself from others and seek medical care right away,' the advisory states.
  - The risk is described as low if precautions are observed, but travelers are warned against contact with suspected patients, contaminated objects, or bodies of those who died from the disease.
  - The advisory adds to international concern, with the United States advising health monitoring and the United Kingdom recommending against non-essential travel to parts of Kenya.
  - Kenyan Health Cabinet Secretary Aden Duale reassured foreign governments on October 9 that the country remains open to tourists and investors, stating the confirmed case does not indicate a wider outbreak.
  - The Ministry of Health has identified 57 people who may have been in contact with the patient, with 10 placed in quarantine.
  - Enhanced screening has been introduced at Jomo Kenyatta International Airport (JKIA) for passengers arriving from 10 relevant countries.
  - Beyond Ebola, Canada continues to advise a high degree of caution in Kenya due to terrorism and crime, restricting travel to Mandera, Wajir, Garissa, parts of Lamu, parts of Turkana and Marsabit counties, and Nairobi's Kibera neighbourhood.

[2026-10-07] U.S. Urges Citizens to Immediately Leave Russia Amid Plague Concerns
VnExpress VT — https://vnexpress.net/my-khuyen-cao-cong-dan-lap-tuc-roi-nga-giua-lo-ngai-dich-benh-5129541.html
  - On October 6, 2026, the U.S. Department of State issued a Level 4 travel advisory ('do not travel') for Russia, urging American citizens to 'immediately leave' the country following reports of a suspected case of pneumonic plague in the Irkutsk region that resulted in one death.
  - The advisory cites concerns over limited U.S. consular support outside Moscow, arbitrary detentions, and security risks.
  - The death involved Dalia Shipilova, a 28-year-old technician at the Irkutsk Anti-Plague Research Institute, who died on October 1, 2026.
  - Shipilova reportedly broke a vial containing Yersinia pestis bacteria on September 25, 2026, and was hospitalized on September 29, 2026, with severe pneumonia symptoms.
  - While some Russian officials initially suggested she died of pneumonic plague, Irkutsk Governor Igor Kobzev stated on October 5, 2026, that a special expert panel determined her cause of death was 'pneumonia of unknown origin.' Russia's consumer protection agency, Rospotrebnadzor, found no plague microorganisms in Shipilova's samples and rejected claims of special plague prevention measures.
  - Despite these findings, President Donald Trump expressed concern on October 6, 2026, stating the U.S. is 'closely monitoring' the situation and had previously offered assistance.
  - The U.S. reportedly sent a confidential diplomatic message to Moscow warning of potential violations of international health obligations if details are not disclosed.
  - The World Health Organization (WHO) requested clarification from Russia, which responded on October 6, 2026, by reporting no plague cases in Irkutsk and confirming no positive tests among Shipilova's contacts.
  - The U.S. Centers for Disease Control and Prevention (CDC) stated it is 'closely monitoring' the reports but sees 'no indication of a broad threat to the United States.' The advisory remains in effect as of October 7, 2026.

[2026-10-05] Switzerland's Detailed African Travel Advisories Highlight Regional Risks and Airport Safety Concerns
Travel And Tour World — https://www.travelandtourworld.com/news/article/k182etbtzf4g/
  - Switzerland's foreign ministry issued country-specific travel advisories for African nations between August 2025 and August 2026, emphasizing that risks vary by region, district, and even specific routes rather than applying uniformly to entire countries.
  - The Swiss notices, published between August 2025 and August 2026, advise against travel to Mali due to high kidnapping threats, warn against specific border areas in Uganda and Rwanda near the Democratic Republic of the Congo, and caution against travel to Lamu County in Kenya, including its islands, as of May 2026.
  - In contrast, British advice for Lamu County (May 2026) makes exceptions for Lamu Island and Manda Island, though it does not guarantee safety.
  - South Africa's advisory, highlighted in the October 2026 update, specifically warns travelers to exercise caution during airport transfers at Johannesburg's O.R.
  - Tambo and Cape Town airports, advising the use of main roads and avoidance of township shortcuts.
  - The Western Cape Government's tourism safety unit offers support services including hospital visits and embassy liaison, but does not provide financial compensation.
  - In December 2025, South Africa's national government deployed 40 tourism monitors at O.R.
  - Tambo, a figure the article notes is dated and should not be assumed to reflect October 2026 staffing levels.
  - Mozambique's advisory (October 2026) advises against travel to Cabo Delgado, Nampula, and Niassa provinces due to armed attacks and kidnapping, while Benin's May 2026 notice cites political stabilization post-election but maintains warnings for the volatile north, including Alibori and Atakora provinces.
  - The Swiss Foreign Ministry states that its notices do not replace local information, do not cover every event, and that insurers may refuse costs if advice is ignored.

[2026-10-03] Canada, Australia, and Others Update Brazil Travel Advisories Ahead of October 4 Election
Travel And Tour World — https://www.travelandtourworld.com/news/article/inbtoda8c0rj/
  - Ahead of Brazil's general election on 4 October 2026, Canada, Australia, the UK, and Germany have updated their travel advisories to warn of security risks, demonstrations, and transport disruptions, though no country has issued a nationwide 'Do Not Travel' ban.
  - Canada updated its advice on 2 October 2026 to include a US security alert, maintaining a 'high degree of caution' due to crime and advising travelers to avoid political gatherings.
  - Australia updated its Smartraveller guidance on 2 October, noting the closure of its embassy in Brasília and advising avoidance of US diplomatic facilities, while maintaining its 'high degree of caution' status.
  - The US continues to classify Brazil at Level 2 ('Exercise Increased Caution') based on a 31 August 2026 assessment, citing crime and kidnapping risks, particularly in border areas and Brasília's satellite cities.
  - The UK's Foreign, Commonwealth and Development Office updated its guidance on 29 September, warning against protests and restricting advice against all but essential travel to specific river areas in Amazonas State.
  - Brazil's Superior Electoral Court reports 158,765,543 eligible voters, with voting scheduled from 08:00 to 17:00 Brasília time on 4 October, and a potential second round on 25 October.
  - Brazil's Federal Highway Police is restricting oversized vehicles on federal highways between 07:00 and 18:00 on 4 and 25 October to prioritize voter mobility.
  - Brazil's Federal Police executed two search-and-seizure warrants on 2 October regarding alleged planning to endanger US diplomatic installations, though they reported no evidence corroborating the risks or identifying suspects linked to criminal organizations at that stage.
  - Official tourism figures show 4,477,469 international visitors arrived by air between January and August 2026, spending approximately R$38.5 billion, with international air traffic growing 7.6% year-on-year.

[2026-10-02] Canada Issues Highest-Risk Travel Advisory for Israel, Qatar, and 12 Middle Eastern Nations Amid Escalating Regional Conflict
Travel And Tour World — https://www.travelandtourworld.com/news/article/qtlzzb6k68eu/
  - On October 02, 2026, Canada's government issued a travel advisory placing Israel, Qatar, and 12 other Middle Eastern nations in the highest 'Red' (Avoid All Travel) risk category due to escalating regional security threats.
  - According to the advisory, the conflict is no longer contained within borders, with missile launches, drone attacks, and retaliatory strikes creating unpredictable risks for travelers, expatriates, and transit passengers.
  - The Red tier includes Iran, Iraq, Lebanon, Palestine, Syria, Yemen, Bahrain, Kuwait, the UAE, and Israel, while Jordan, Oman, and Saudi Arabia are placed in the Orange 'Avoid Non-Essential Travel' tier.
  - Major aviation hubs like Dubai, Doha, and Tel Aviv are highlighted as especially vulnerable to sudden flight cancellations or airspace closures.
  - The advisory warns that travelers cannot assume stable conditions at the start of a trip will persist, citing specific dangers such as detention risks in Iran, active conflict in Gaza, and infrastructure collapse in Lebanon.
  - Canada recommends that citizens register via the 'Registration of Canadians Abroad' service, verify travel insurance exclusions regarding war and civil unrest, and monitor airline apps directly for sudden schedule changes.

[… older articles omitted]

## Tool outputs

### resolution_source (SUCCESS)
RESOLUTION SOURCE (the page the question resolves on — treat as the status-quo anchor):
  Current state: As of the live CDC Travel Health Notices page (fetched today), the most recent North American country notices are: Chikungunya in Nicaragua (Updated September 03, 2026), Yellow Fever in Colombia (Updated September 18, 2026), and Chikungunya in Costa Rica (Updated July 30, 2026, not shown in current list but was present in August archive). No North American country notice is listed as newly issued or updated in October 2026 yet.
  Last updated: September 23, 2026 (Global Polio notice, the most recent update date shown on the page) | already resolved: unclear | page matches criteria: True
  Note: The question asks about notices newly issued specifically in October 2026; as of the fetch date (within October 2026), no North American country notice has yet appeared as 'New' or dated in October 2026 on the live CDC THN page. This could still change as the month progresses, so the outcome remains undetermined.
  Fetched: fetch: https://wwwnc.cdc.gov/travel/notices (HTTP 200)
  Fetched: fetch: https://web.archive.org/web/20260817181439mp_/https://wwwnc.cdc.gov/travel/notices (HTTP 200)

### web_search (SUCCESS)
Web search summary (19 results):
Based on my searches, here's a comprehensive summary of CDC travel health notices relevant to Mexico, the Caribbean, and Central America as of October 2026:

## Query 1: CDC Travel Health Notice October 2026 – Mexico/Caribbean/Central America

**Key Facts:**

1. **Global Dengue (Level 1) – Updated October 2, 2026**
The CDC's main travel notices page lists several countries under Level 1 "Practice Usual Precautions," including 
Costa Rica, Cuba, Ecuador (including the Galápagos Islands), and Panama under a Global Dengue notice updated October 2, 2026, noting that dengue is a year-round risk in many parts of the world, with outbreaks commonly occurring every 2–5 years
. The page itself was last reviewed on October 2, 2026.

2. **Rocky Mountain Spotted Fever (RMSF) – Mexico**
A notable notice specific to Mexico concerns RMSF: 
illness and death due to Rocky Mountain spotted fever (RMSF) have been reported in the northern region of Mexico along the U.S. border, particularly in Baja California, Sonora, Chihuahua, Coahuila, and Nuevo León
.

3. **2026 CDC Yellow Book Updates for the Region**
The 2026 edition of the CDC Yellow Book (Health Information for International Travel) includes updated country-specific chapters:
   - For **Guatemala and Belize**: 
routine childhood immunization rates in both Guatemala and Belize declined during the COVID-19 pandemic, potentially increasing the risk for vaccine-preventable infections such as measles and pertussis
 (published April 23, 2025, for the 2026 edition).
   - For **Mexico**: 
Mexico, the second most populous country in Latin America (population over 120 million), is the country most often visited by U.S. tourists, with many U.S. residents traveling across the border contributing to nearly 200 million U.S.-Mexico land border crossings annually
. 
Hepatitis A is also noted as endemic to Mexico, with visitors advised to receive at least one dose of the vaccine series before travel
.

4. **Cruise Ship Illness (Mexico/Caribbean)**
A 2026 report noted a significant decline in outbreaks: 
CDC data showed cruise ship illness outbreaks dropped 88% in January and February of 2026 compared to the same period in 2025
, with 
the CDC's Vessel Sanitation Program (VSP) requiring cruise lines to report when 2% or more of passengers/crew have gastrointestinal illness, with outbreaks officially declared at 3%
.

5. **Histoplasmosis in Central America/Caribbean**
CDC's Central America program page notes: 
CDC investigated several histoplasmosis outbreaks among U.S. travelers linked to cave exposures in Central America and the Caribbean, where travelers encountered environments contaminated with fungal spores (a lung infection often present in areas with bat or bird droppings)
.

**Sources:** wwwnc.cdc.gov/travel/notices; cdc.gov/yellow-book (Guatemala/Belize and Mexico chapters, 2026 edition); cdc.gov/global-health/countries/central-america.html; travelandtourworld.com (cruise outbreak data)

---

## Query 2: wwwnc.cdc.gov

### claude_news (SUCCESS)

You are an elite superforecaster. Read ALL the research below — the raw tool outputs, the news bundle and the six research reports — and give one calibrated probability for this Metaculus binary question.

## Question
Will any North American country have a CDC travel advisory issued in October 2026?

## Description / Resolution Criteria
## Description
At the time of this question's authorship, the most recent new notice for a North American country was for Chikungunya in Nicaragua on August 3, 2026. Please see [web archive](https://web.archive.org/web/20260817181439mp_/https://wwwnc.cdc.gov/travel/notices).

`{"format": "bot_tournament_question", "info": {"hash_id": "465dd68cdec98d63", "sheet_id": "9"}}`

## Resolution Criteria
This question resolves as **Yes** if a country in North America has a Travel Health Notice (THN) by the Centers for Disease Control at its [THN](https://wwwnc.cdc.gov/travel/notices) page newly issued in October 2026.

## Fine Print
No other resolution source will be used in resolving this question.

## Research tool outputs (raw; the resolution-source read is the status-quo anchor)
## Tool outputs

### resolution_source (SUCCESS)
RESOLUTION SOURCE (the page the question resolves on — treat as the status-quo anchor):
  Current state: As of the live CDC Travel Health Notices page (fetched today), the most recent North American country notices are: Chikungunya in Nicaragua (Updated September 03, 2026), Yellow Fever in Colombia (Updated September 18, 2026), and Chikungunya in Costa Rica (Updated July 30, 2026, not shown in current list but was present in August archive). No North American country notice is listed as newly issued or updated in October 2026 yet.
  Last updated: September 23, 2026 (Global Polio notice, the most recent update date shown on the page) | already resolved: unclear | page matches criteria: True
  Note: The question asks about notices newly issued specifically in October 2026; as of the fetch date (within October 2026), no North American country notice has yet appeared as 'New' or dated in October 2026 on the live CDC THN page. This could still change as the month progresses, so the outcome remains undetermined.
  Fetched: fetch: https://wwwnc.cdc.gov/travel/notices (HTTP 200)
  Fetched: fetch: https://web.archive.org/web/20260817181439mp_/https://wwwnc.cdc.gov/travel/notices (HTTP 200)

### web_search (SUCCESS)
Web search summary (19 results):
Based on my searches, here's a comprehensive summary of CDC travel health notices relevant to Mexico, the Caribbean, and Central America as of October 2026:

## Query 1: CDC Travel Health Notice October 2026 – Mexico/Caribbean/Central America

**Key Facts:**

1. **Global Dengue (Level 1) – Updated October 2, 2026**
The CDC's main travel notices page lists several countries under Level 1 "Practice Usual Precautions," including 
Costa Rica, Cuba, Ecuador (including the Galápagos Islands), and Panama under a Global Dengue notice updated October 2, 2026, noting that dengue is a year-round risk in many parts of the world, with outbreaks commonly occurring every 2–5 years
. The page itself was last reviewed on October 2, 2026.

2. **Rocky Mountain Spotted Fever (RMSF) – Mexico**
A notable notice specific to Mexico concerns RMSF: 
illness and death due to Rocky Mountain spotted fever (RMSF) have been reported in the northern region of Mexico along the U.S. border, particularly in Baja California, Sonora, Chihuahua, Coahuila, and Nuevo León
.

3. **2026 CDC Yellow Book Updates for the Region**
The 2026 edition of the CDC Yellow Book (Health Information for International Travel) includes updated country-specific chapters:
   - For **Guatemala and Belize**: 
routine childhood immunization rates in both Guatemala and Belize declined during the COVID-19 pandemic, potentially increasing the risk for vaccine-preventable infections such as measles and pertussis
 (published April 23, 2025, for the 2026 edition).
   - For **Mexico**: 
Mexico, the second most populous country in Latin America (population over 120 million), is the country most often visited by U.S. tourists, with many U.S. residents traveling across the border contributing to nearly 200 million U.S.-Mexico land border crossings annually
. 
Hepatitis A is also noted as endemic to Mexico, with visitors advised to receive at least one dose of the vaccine series before travel
.

4. **Cruise Ship Illness (Mexico/Caribbean)**
A 2026 report noted a significant decline in outbreaks: 
CDC data showed cruise ship illness outbreaks dropped 88% in January and February of 2026 compared to the same period in 2025
, with 
the CDC's Vessel Sanitation Program (VSP) requiring cruise lines to report when 2% or more of passengers/crew have gastrointestinal illness, with outbreaks officially declared at 3%
.

5. **Histoplasmosis in Central America/Caribbean**
CDC's Central America program page notes: 
CDC investigated several histoplasmosis outbreaks among U.S. travelers linked to cave exposures in Central America and the Caribbean, where travelers encountered environments contaminated with fungal spores (a lung infection often present in areas with bat or bird droppings)
.

**Sources:** wwwnc.cdc.gov/travel/notices; cdc.gov/yellow-book (Guatemala/Belize and Mexico chapters, 2026 edition); cdc.gov/global-health/countries/central-america.html; travelandtourworld.com (cruise outbreak data)

---

## Query 2: wwwnc.cdc.gov

### claude_news (SUCCESS)

## Question dates and conventions
Dates: opened 2026-10-11; forecasting closes 2026-10-11; resolves 2026-11-01. Only events AFTER the open date can satisfy the criteria; assume the event has NOT happened unless a source shows it has. A question phrased 'before <date>' or 'by <date>' asks whether it happens between now and that date. The deadline for the outcome is the RESOLUTION date, not the close date.

## Recent news (AskNews, raw article summaries, newest first — read these directly)
13 AskNews articles (newest first; 6 from the last 48 h, 10 from the archive). Summaries are AskNews's own; dates are publication dates.

[2026-10-10] China CDC Issues October 2026 Health Advisory on Respiratory, Vector-Borne, and Infectious Diseases
南方网 — https://news.southcn.com/node_cf18aa799b/a88cd5b1bc.shtml
  - On October 10, 2026, the Chinese Center for Disease Control and Prevention (China CDC) issued a health protection advisory for October 2026.
  - The advisory identifies six key disease categories requiring vigilance: respiratory infections (novel coronavirus and influenza), mosquito-borne diseases (dengue, chikungunya, Zika), Ebola virus disease, monkeypox, severe fever with thrombocytopenia syndrome (SFTS), and common school/childcare outbreaks (hand-foot-and-mouth disease, chickenpox, norovirus).
  - Current data indicates the novel coronavirus is in a low-level epidemic phase, while influenza activity is rising in southern China, particularly in crowded settings like stations, aircraft, scenic spots, and banquets.
  - The China CDC recommends specific protective measures for each category, including maintaining hygiene, wearing masks in crowded areas, and ensuring high-risk groups (elderly, infants, pregnant women, chronic patients) receive flu vaccinations.
  - For mosquito-borne diseases, the advisory details symptoms such as 'three pains' and 'three reds' for dengue and warns that Zika infection in pregnant women can cause microcephaly in newborns.
  - Travelers to Southeast Asia, Africa, or South America are advised to check local outbreaks and use repellents containing DEET, Picaridin, or IR3535.
  - Regarding Ebola, the advisory urges avoidance of high-risk regions and mandates 21 days of self-monitoring upon return.
  - For monkeypox, transmission via direct contact is highlighted, with recommendations to avoid close contact with suspected cases.
  - SFTS, transmitted by ticks, is noted as prevalent in spring and summer, with outdoor workers at higher risk.
  - Schools and childcare centers are instructed to enforce the 'seven-step handwashing method', ensure daily ventilation for at least 30 minutes, and exclude symptomatic children from attendance.

[2026-10-10] US Issues Travel Warning for South Africa as Anti-Immigration Protests Turn Violent in Durban and Soweto
Travel And Tour World — https://www.travelandtourworld.com/news/article/4ojhgcia36c6/
  - On October 9, 2026, the US Mission to South Africa issued a security alert urging American citizens to monitor anti-immigration protests in Durban and Johannesburg's Soweto township, where violence included the torching of at least 24 vehicles (14 in Durban, 10 in Soweto) and looting of foreign-owned businesses, according to Associated Press reports.
  - The unrest stemmed from tensions over asylum application procedures following a Constitutional Court ruling that asylum seekers cannot be denied access solely due to illegal entry.
  - The US Consulate General in Durban temporarily closed on October 9, 2026, due to the unrest in the central business district and Durban South.
  - While the US State Department's country-level advisory remains at Level 2 (Exercise Increased Caution) issued on May 27, 2025, the specific October 2026 alerts highlight localized security risks.
  - Statistics South Africa reported 10,498,506 overnight tourists in 2025, a 17.7% increase from 2024 and 2.6% above 2019 pre-pandemic levels, with tourism contributing 4.9% to GDP and supporting 953,981 jobs.
  - The article clarifies that while the unrest disrupts local movement and property, there is no confirmed evidence of nationwide airport closures, flight cancellations, or a general suspension of tourism services as of the publication date.

[2026-10-09] Canada Updates Kenya Travel Advisory: Ebola Alert and Security Warnings Issued in October 2026
Travel And Tour World — https://www.travelandtourworld.com/news/article/zfe9r1k2afi6/
  - Canada updated its official travel advisory for Kenya in October 2026, adding a specific Ebola disease monitoring alert following a confirmed imported case of the Bundibugyo virus.
  - According to the World Health Organization (WHO), the patient traveled from the Democratic Republic of the Congo via Uganda, arriving in Nairobi on 3 October 2026, testing positive, and dying on 5 October 2026.
  - While the WHO advises against blanket travel or trade restrictions, the Canadian government now recommends exercising a 'high degree of caution' across Kenya, with specific directives to avoid all travel or reconsider non-essential journeys in several high-risk zones.
  - These include Mandera, Wajir, and Garissa counties near the Somali border; designated areas of Lamu, Tana River, and parts of Kilifi counties due to kidnapping and targeted attacks; and areas within 110 kilometres of the South Sudan and Ethiopian borders in Turkana and Marsabit counties due to cross-border violence and terrorism.
  - In Nairobi, the advisory specifically warns against non-essential travel to Kibera, Eastleigh, Mathare, and the Central Business District due to crime.
  - The report also highlights risks regarding travel insurance coverage if visitors enter restricted areas, potential financial extortion and kidnapping linked to online meetings, and the need for secure transport arrangements.
  - Canadian authorities urge tourists to verify insurance policies, use reputable tour operators, and maintain strict digital and personal safety precautions.

[2026-10-09] Multiple Nations Update Travel Warnings for Saudi Arabia Amid Escalating Middle East Tensions
Travel And Tour World — https://www.travelandtourworld.com/news/article/rfppsg9gtjam/
  - As of October 9, 2026, escalating Middle East tensions have prompted multiple nations to issue updated travel warnings for Saudi Arabia.
  - Canada, Australia, the United Kingdom, the Netherlands, Germany, Sweden, New Zealand, and the United States have all advised their citizens to reconsider or avoid non-essential travel due to risks including missile attacks, drone activity, falling military debris, and potential airport closures.
  - Canada updated its advisory on October 8, 2026, citing missile and drone threats, specifically warning against non-essential travel nationwide while maintaining stricter restrictions for southern provinces near Yemen.
  - Australia updated its Smartraveller advisory on October 9, 2026, linking the deterioration to renewed Houthi military activity since July 2026, and advises avoiding Asir, Jazan, and Najran provinces.
  - The United Kingdom expanded its restrictions on October 8, 2026, to include Riyadh Province, Taif city, and Taif International Airport, alongside its existing ban on travel within 10 kilometers of the Yemeni border.
  - The Netherlands, Germany, Sweden, New Zealand, and the United States have similarly issued warnings, with Germany updating its guidance on October 2, 2026, and New Zealand and the US maintaining advisories from September 2026.
  - These advisories are recommendations rather than a collective travel ban, but they highlight significant risks to aviation infrastructure, energy facilities, and civilian populations.
  - Specific threats include attacks on airports in Abha, Jeddah, Jizan, Najran, and Riyadh, as well as the danger of falling debris from intercepted missiles.
  - Governments warn that travel insurance may become invalid if travelers ignore official advice, and emphasize the need for contingency planning.

[2026-10-09] October 2026 North American Storms Threaten Travel with Hurricanes Isaias and Simon
Travel And Tour World — https://www.travelandtourworld.com/news/article/h7je8gjjr7d9/
  - In October 2026, severe weather events are creating travel uncertainty across North America, specifically involving Hurricane Isaias in the Gulf region, Hurricane Simon near Mexico's Pacific coast, and Tropical Storm Rachel in the eastern Pacific.
  - According to the October 9 National Hurricane Center advisory, Hurricane Isaias is a Category 3 storm with sustained winds of approximately 120 mph, threatening US Gulf Coast states including Florida, Alabama, Mississippi, and Louisiana, with potential operational restrictions at airports in Pensacola, Panama City, Mobile, and Gulfport.
  - Hurricane Simon, with sustained winds of approximately 100 mph, poses risks to Mexican destinations in Jalisco, Colima, Nayarit, and Michoacán, including Puerto Vallarta.
  - Tropical Storm Rachel has sustained winds of approximately 50 mph and threatens Baja California and the southwestern US.
  - Airlines including American Airlines, Delta Air Lines, Southwest Airlines, and WestJet have issued travel flexibility policies for travel dates between October 9 and October 14, allowing eligible passengers to reschedule or rebook without change fees under specified conditions.
  - However, the article notes that the full extent of storm-related flight cancellations remains unconfirmed and that reliable cancellation totals require verified operational records.
  - The Federal Aviation Administration has highlighted potential thunderstorms and strong winds affecting major hubs like Orlando, Tampa, Miami, Fort Lauderdale, New York, Philadelphia, and Atlanta.
  - Passenger rights vary by country; US federal rules generally do not require cash compensation for weather-related cancellations, while Canada's Air Passenger Protection Regulations distinguish between disruptions within airline control and those caused by extreme weather.

[2026-10-09] Canada Issues Ebola Warning for Kenya Travel Following Imported Case
The Star — https://www.the-star.co.ke/news/2026-10-09-canada-issues-ebola-warning-for-travellers-to-kenya
  - On October 9, 2026, the Government of Canada issued an updated travel advisory for its citizens visiting Kenya following the confirmation of an imported Ebola case in Nairobi involving a traveller from the Democratic Republic of the Congo (DRC).
  - The Canadian government advises visitors to monitor for Ebola symptoms for 21 days after leaving Kenya, practice good hygiene, and avoid healthcare facilities in affected areas unless urgent medical attention is required. 'Monitor your health while in Kenya and for 21 days after you leave.
  - If you develop symptoms of Ebola disease, isolate yourself from others and seek medical care right away,' the advisory states.
  - The risk is described as low if precautions are observed, but travelers are warned against contact with suspected patients, contaminated objects, or bodies of those who died from the disease.
  - The advisory adds to international concern, with the United States advising health monitoring and the United Kingdom recommending against non-essential travel to parts of Kenya.
  - Kenyan Health Cabinet Secretary Aden Duale reassured foreign governments on October 9 that the country remains open to tourists and investors, stating the confirmed case does not indicate a wider outbreak.
  - The Ministry of Health has identified 57 people who may have been in contact with the patient, with 10 placed in quarantine.
  - Enhanced screening has been introduced at Jomo Kenyatta International Airport (JKIA) for passengers arriving from 10 relevant countries.
  - Beyond Ebola, Canada continues to advise a high degree of caution in Kenya due to terrorism and crime, restricting travel to Mandera, Wajir, Garissa, parts of Lamu, parts of Turkana and Marsabit counties, and Nairobi's Kibera neighbourhood.

[2026-10-07] U.S. Urges Citizens to Immediately Leave Russia Amid Plague Concerns
VnExpress VT — https://vnexpress.net/my-khuyen-cao-cong-dan-lap-tuc-roi-nga-giua-lo-ngai-dich-benh-5129541.html
  - On October 6, 2026, the U.S. Department of State issued a Level 4 travel advisory ('do not travel') for Russia, urging American citizens to 'immediately leave' the country following reports of a suspected case of pneumonic plague in the Irkutsk region that resulted in one death.
  - The advisory cites concerns over limited U.S. consular support outside Moscow, arbitrary detentions, and security risks.
  - The death involved Dalia Shipilova, a 28-year-old technician at the Irkutsk Anti-Plague Research Institute, who died on October 1, 2026.
  - Shipilova reportedly broke a vial containing Yersinia pestis bacteria on September 25, 2026, and was hospitalized on September 29, 2026, with severe pneumonia symptoms.
  - While some Russian officials initially suggested she died of pneumonic plague, Irkutsk Governor Igor Kobzev stated on October 5, 2026, that a special expert panel determined her cause of death was 'pneumonia of unknown origin.' Russia's consumer protection agency, Rospotrebnadzor, found no plague microorganisms in Shipilova's samples and rejected claims of special plague prevention measures.
  - Despite these findings, President Donald Trump expressed concern on October 6, 2026, stating the U.S. is 'closely monitoring' the situation and had previously offered assistance.
  - The U.S. reportedly sent a confidential diplomatic message to Moscow warning of potential violations of international health obligations if details are not disclosed.
  - The World Health Organization (WHO) requested clarification from Russia, which responded on October 6, 2026, by reporting no plague cases in Irkutsk and confirming no positive tests among Shipilova's contacts.
  - The U.S. Centers for Disease Control and Prevention (CDC) stated it is 'closely monitoring' the reports but sees 'no indication of a broad threat to the United States.' The advisory remains in effect as of October 7, 2026.

[2026-10-05] Switzerland's Detailed African Travel Advisories Highlight Regional Risks and Airport Safety Concerns
Travel And Tour World — https://www.travelandtourworld.com/news/article/k182etbtzf4g/
  - Switzerland's foreign ministry issued country-specific travel advisories for African nations between August 2025 and August 2026, emphasizing that risks vary by region, district, and even specific routes rather than applying uniformly to entire countries.
  - The Swiss notices, published between August 2025 and August 2026, advise against travel to Mali due to high kidnapping threats, warn against specific border areas in Uganda and Rwanda near the Democratic Republic of the Congo, and caution against travel to Lamu County in Kenya, including its islands, as of May 2026.
  - In contrast, British advice for Lamu County (May 2026) makes exceptions for Lamu Island and Manda Island, though it does not guarantee safety.
  - South Africa's advisory, highlighted in the October 2026 update, specifically warns travelers to exercise caution during airport transfers at Johannesburg's O.R.
  - Tambo and Cape Town airports, advising the use of main roads and avoidance of township shortcuts.
  - The Western Cape Government's tourism safety unit offers support services including hospital visits and embassy liaison, but does not provide financial compensation.
  - In December 2025, South Africa's national government deployed 40 tourism monitors at O.R.
  - Tambo, a figure the article notes is dated and should not be assumed to reflect October 2026 staffing levels.
  - Mozambique's advisory (October 2026) advises against travel to Cabo Delgado, Nampula, and Niassa provinces due to armed attacks and kidnapping, while Benin's May 2026 notice cites political stabilization post-election but maintains warnings for the volatile north, including Alibori and Atakora provinces.
  - The Swiss Foreign Ministry states that its notices do not replace local information, do not cover every event, and that insurers may refuse costs if advice is ignored.

[2026-10-03] Canada, Australia, and Others Update Brazil Travel Advisories Ahead of October 4 Election
Travel And Tour World — https://www.travelandtourworld.com/news/article/inbtoda8c0rj/
  - Ahead of Brazil's general election on 4 October 2026, Canada, Australia, the UK, and Germany have updated their travel advisories to warn of security risks, demonstrations, and transport disruptions, though no country has issued a nationwide 'Do Not Travel' ban.
  - Canada updated its advice on 2 October 2026 to include a US security alert, maintaining a 'high degree of caution' due to crime and advising travelers to avoid political gatherings.
  - Australia updated its Smartraveller guidance on 2 October, noting the closure of its embassy in Brasília and advising avoidance of US diplomatic facilities, while maintaining its 'high degree of caution' status.
  - The US continues to classify Brazil at Level 2 ('Exercise Increased Caution') based on a 31 August 2026 assessment, citing crime and kidnapping risks, particularly in border areas and Brasília's satellite cities.
  - The UK's Foreign, Commonwealth and Development Office updated its guidance on 29 September, warning against protests and restricting advice against all but essential travel to specific river areas in Amazonas State.
  - Brazil's Superior Electoral Court reports 158,765,543 eligible voters, with voting scheduled from 08:00 to 17:00 Brasília time on 4 October, and a potential second round on 25 October.
  - Brazil's Federal Highway Police is restricting oversized vehicles on federal highways between 07:00 and 18:00 on 4 and 25 October to prioritize voter mobility.
  - Brazil's Federal Police executed two search-and-seizure warrants on 2 October regarding alleged planning to endanger US diplomatic installations, though they reported no evidence corroborating the risks or identifying suspects linked to criminal organizations at that stage.
  - Official tourism figures show 4,477,469 international visitors arrived by air between January and August 2026, spending approximately R$38.5 billion, with international air traffic growing 7.6% year-on-year.

[2026-10-02] Canada Issues Highest-Risk Travel Advisory for Israel, Qatar, and 12 Middle Eastern Nations Amid Escalating Regional Conflict
Travel And Tour World — https://www.travelandtourworld.com/news/article/qtlzzb6k68eu/
  - On October 02, 2026, Canada's government issued a travel advisory placing Israel, Qatar, and 12 other Middle Eastern nations in the highest 'Red' (Avoid All Travel) risk category due to escalating regional security threats.
  - According to the advisory, the conflict is no longer contained within borders, with missile launches, drone attacks, and retaliatory strikes creating unpredictable risks for travelers, expatriates, and transit passengers.
  - The Red tier includes Iran, Iraq, Lebanon, Palestine, Syria, Yemen, Bahrain, Kuwait, the UAE, and Israel, while Jordan, Oman, and Saudi Arabia are placed in the Orange 'Avoid Non-Essential Travel' tier.
  - Major aviation hubs like Dubai, Doha, and Tel Aviv are highlighted as especially vulnerable to sudden flight cancellations or airspace closures.
  - The advisory warns that travelers cannot assume stable conditions at the start of a trip will persist, citing specific dangers such as detention risks in Iran, active conflict in Gaza, and infrastructure collapse in Lebanon.
  - Canada recommends that citizens register via the 'Registration of Canadians Abroad' service, verify travel insurance exclusions regarding war and civil unrest, and monitor airline apps directly for sudden schedule changes.

[… older articles omitted]

## Research reports (one per dimension: web search + page reads, dated, with sources)
### CURRENT STATE
- [2026-10-11] The live CDC Travel Health Notices page (wwwnc.cdc.gov/travel/notices), fetched directly today, shows **no North American country with a notice newly issued in October 2026**. The most recent North America-related Level 1 notices are 
Hepatitis A in Canada, June 04, 2026
 (Manitoba outbreak) and Rocky Mountain Spotted Fever in Mexico, dated December 23, 2025 (per the fetched page content). https://wwwnc.cdc.gov/travel/notices
- [2026-10-02] The only October update visible on the CDC THN page so far is a refresh (not a "New" notice) to the pre-existing Global Dengue notice, whose destination list includes North American-region entries such as Costa Rica, Panama, Cuba and Ecuador; this is a page "last reviewed" date, not a newly issued THN. https://wwwnc.cdc.gov/travel/notices
- [2026-10-08] CDC's Ebola Bundibugyo situation summary (DRC) was updated, and a THN for that outbreak exists, but it does not involve a North American country. https://www.thetraveler.org/new-us-travel-warning-cites-rising-global-health-risks/
- [2026-10-09] CDC's national measles surveillance page was updated October 9, 2026, reflecting continued US case growth, but this is a domestic data tracker, not a THN for a North American country. https://www.cdc.gov/measles/data-research/index.html
- [2026-09-03] Separate reporting noted 
"As of September 3, 2026, CDC's national tally listed 3,134 confirmed cases for the year"
 for US measles, underscoring an active outbreak environment that could still prompt a future THN, but no US/Mexico/Canada-specific THN has been issued as of the fetch date. https://www.thetraveler.org/measles-travel-warning-what-travelers-need-to-know-in-2026/
- [2026-08-03] Per the question's own framing, the last *new* North American THN was Chikungunya in Nicaragua (Aug 3, 2026); this notice no longer appears on the live page fetched today, suggesting it may have aged off the active list, consistent with CDC's practice of eventually removing resolved notices.
- [2026-10-09/10] Canada's own Global Affairs travel advisory for Mexico was refreshed (Oct 9–10, 2026) for hurricanes Simon/Isaias and crime risk, but this is a Canadian government advisory, not a CDC THN, and falls outside the CDC resolution source. https://travel.gc.ca/destinations/mexico
- [2026-10-10] Independent travel-industry reporting on North American storm risk (Hurricane Isaias, Hurricane Simon, Tropical Storm Rachel) does not reference any CDC THN issuance for Mexico, the US, or Canada. https://www.travelandtourworld.com/news/article/h7je8gjjr7d9/
- [2025-12-18] For context on how CDC THNs on this page evolve, examples from earlier 2025/2026 (Chagas, RMSF, Salmonella Newport in Mexico) show CDC periodically issues low-level (Level 1) notices for Mexico, indicating a plausible but not currently realized pathway to a "Yes" resolution before month's end.

BOTTOM LINE: As of October 11, 2026, the CDC Travel Health Notices page shows no North American country (US, Canada, Mexico, Central America, or Caribbean as CDC classifies them) with a notice newly issued in October; the most recent North America entries date to June 2026 (Canada) and December 2025 (Mexico), and active global health events (DRC Ebola, Yemen malaria) are driving current CDC attention rather than North America — though ongoing measles outbreaks in Mexico/Canada and hurricane-related conditions in Mexico are plausible triggers for a new notice before the question closes.

NOT FOUND: No evidence of any CDC THN for a North American country dated between October 1–11, 2026; no official CDC press release or newsroom statement announcing plans for a new North America-specific notice in October 2026.

### BASE RATE
- [2026-10-11 current snapshot] CDC's live Travel Health Notices page shows the most recent North-America-linked entries as: Chikungunya in Nicaragua (originally New Aug 3, 2026, updated Sept 3, 2026), Hepatitis A in Costa Rica (New Sept 18, 2026, per archived crawl), Diphtheria in Haiti (New June 25, 2026), Chikungunya in Costa Rica (first posted ~mid-2026, updated July 30, 2026), Hepatitis A in Canada (New June 4, 2026), Rocky Mountain Spotted Fever in Mexico (New Dec 23, 2025), and Chikungunya in Cuba and Oropouche in the Americas (Cuba/Panama) from late 2025 — https://wwwnc.cdc.gov/travel/notices

- [2026-10-11] As of question-authorship, no October-2026-dated notice yet exists for a North American country; the newest listed items on the live CDC page are dated September 18–23, 2026 (Global Polio update, Yellow Fever in Colombia update) — https://wwwnc.cdc.gov/travel/notices

- [2025-12-05/08] CDC issued a Level 2 chikungunya notice for Cuba in December 2025, one of several "4 countries" alerts reported by press at the time — https://www.foxnews.com/us/cdc-warns-americans-traveling-4-countries-outbreak-untreatable-mosquito-disease

- [2025-09-18] CDC's Oropouche in the Americas notice (covering Brazil, Cuba, Panama, Peru) was a North-America-touching entry from fall 2025, illustrating the recurring Caribbean/Central American disease-notice pattern — https://wwwnc.cdc.gov/travel/notices

- [2026-06-04] 
Manitoba, Canada was reported as experiencing a hepatitis A virus (HAV) outbreak, contagious and spreading through close person-to-person contact and contaminated food or drink
, generating a new Level 1 THN for Canada — https://wwwnc.cdc.gov/travel/notices

- [2026-06-25] 
An outbreak of diphtheria in Haiti prompted a notice, noting vaccination against diphtheria is essential to protect against the disease
 — https://wwwnc.cdc.gov/travel/notices

- [2026-08-03] A new Level 2 Chikungunya notice for Nicaragua was issued (cited by the question itself as the most recent "new" North American notice at authorship) — https://wwwnc.cdc.gov/travel/notices

- [2026-07-30] 
An outbreak of chikungunya in northwest Costa Rica (Alajuela, Heredia, Guanacaste, parts of Puntarenas and San Jose)
 remained an active Level 2 THN, reviewed/updated July 30, 2026 — https://wwwnc.cdc.gov/travel/notices/level2/chikungunya-costa-rica

- [2025-12-23] A new Level 1 notice was posted for Rocky Mountain Spotted Fever in northern Mexico border states (Baja California, Sonora, Chihuahua, Coahuila, Nuevo León) — https://wwwnc.cdc.gov/travel/notices

- Reference-class tally: counting distinct "New" North-America-linked THNs (Mexico, Canada, Caribbean, Central America) over the trailing ~13 months (Sept 2025–Sept 2026) yields roughly 7–8 separate new postings (Oropouche/Cuba-Panama Sept 2025, Cuba chikungunya Dec 2025, Mexico RMSF Dec 2025, Costa Rica chikungunya mid-2026, Canada hepatitis A June 2026, Haiti diphtheria June 2026, Nicaragua chikungunya Aug 2026, Costa Rica hepatitis A Sept 2026), i.e., roughly one new NA-region notice every 5–7 weeks on average, with a clear acceleration (about one per month) from April through September 2026.

- No dedicated prediction markets, pollsters, or expert forecasts on CDC THN issuance frequency were found; this is a low-profile administrative/epidemiological process, not a tracked forecasting market.

BOTTOM LINE: Historically CDC has posted a brand-new North-America-region Travel Health Notice roughly every 5–7 weeks over the past year, with the pace quickening to about once a month since spring 2026 (chikungunya spreading through Central America/Caribbean, plus hepatitis A and diphtheria outbreaks); this outside-view cadence suggests that, absent any special block on new postings, a fresh October 2026 North American notice would be more likely than not, though no notice had yet appeared for October as of the Oct 11 snapshot.

NOT FOUND: No explicit historical count/dataset of "North America" THNs per month published by CDC; no betting markets, expert panels, or formal base-rate studies specifically on CDC THN issuance cadence; could not confirm the exact original "New" posting date for the Costa Rica chikungunya notice (only the July 30, 2026 "last reviewed" update date was available).

### KEY FACTORS
**Key causal drivers for whether CDC issues a new North American THN in October 2026:**

- [2026-10-11] The live CDC Travel Health Notices page, fetched directly, shows the newest entries are still 
last reviewed October 02, 2026
, with the most recent Level 2 postings being Colombia yellow fever (Sept 18) and Nicaragua chikungunya (Sept 3) — confirming no North American country has a notice newly dated in October as of question-open, consistent with colleagues' snapshot. https://wwwnc.cdc.gov/travel/notices

- [2026-10-09] PAHO's director-level warning is the single strongest live trigger: a new regional risk assessment finds 
55,792 confirmed measles cases and 77 deaths were reported in 17 countries and territories in the Region between 4 January and 3 October 2026, a 4.8-fold increase in cases compared with the same period in 2025
, with 
Guatemala reporting the largest number of cases, followed by Mexico, the United States, Peru and Canada, together accounting for 99.5% of confirmed cases in the Region
 — a near-direct match to North American geography (CDC's own definition includes Mexico/Central America/Caribbean). https://paho.org/en/news/9-10-2026-paho-assesses-risk-measles-spread-very-high-ahead-religious-mass-gatherings-americas

- [2026-10-09] PAHO explicitly ties this to imminent travel risk, noting 
several religious mass gatherings in South America are expected to increase national and international travel across the Americas in the coming months, with the risk of measles spread across the Region remaining very high
 — CDC's own THN criteria list "mass gathering events that can lead to disease outbreaks" as a qualifying trigger, giving a concrete mechanism for a new or upgraded North American notice this month. https://paho.org/en/news/9-10-2026-paho-assesses-risk-measles-spread-very-high-ahead-religious-mass-gatherings-americas

- [2026-10-11, standing notice] Countervailing factor: CDC already maintains a long-running Level 1 "Global Measles" THN (originally dated May 28, 2025) that explicitly covers Guatemala and, by extension, other high-case countries like Mexico and the US; Guatemala's CDC destination page as read in October 2026 still shows only this pre-existing notice, no new country-specific escalation. This means the PAHO-driven measles surge may simply update the existing global notice rather than generate a "newly issued" North American entry, which is what the resolution criteria require. https://wwwnc.cdc.gov/travel/destinations/traveler/none/guatemala

- [2026-10-06] A distinct, genuinely new epidemiological event with CDC-notice potential: WHO was notified that 
this is the first time that locally acquired transmission of chikungunya has been detected in the WHO Americas Region
 on the Caribbean island of Saint Martin/Sint Maarten, with 
health authorities on both the French and Dutch sides cooperating closely to respond to this outbreak
 — a brand-new geography CDC has not yet posted a notice for, and "sporadic cases of a disease in an unusual or new geographic location" is one of CDC's own stated THN triggers. https://infectioncontroltoday.com/view/who-notified-chikungunya-disease-caribbean-isle-saint-martin

- [2026-09-15] Working against a fresh chikungunya notice elsewhere in the hemisphere: regional surveillance shows the broader Americas chikungunya wave is easing, with 
incident cases reported in Brazil & Costa Rica with trends declining; as of September 15, there have been 198,591 chikungunya cases, of which 74,841 are confirmed, and 87 deaths reported in the Americas during 2026, with 2,162 incident cases and 962 confirmed cases added since the previous update
 — a slowing trajectory that reduces (though does not eliminate) the odds of a new Central American/Caribbean chikungunya THN this month. https://globalhealthreports.health.ny.gov/sites/default/files/2026-09/Global%20Health%20Update%209.17.26%20-%20Final.pdf

- [2026-10-11] A natural-disaster pathway exists institutionally but is not currently triggered: CDC maintains a standing notices infrastructure that includes an "earthquake-hurricane-mexico" alert category (URL structure confirms this notice type exists), and CDC's own Yellow Book flags 
Beach and ocean exposures, Dengue, Malaria, Rickettsioses, Valley fever
 plus hurricane-driven infrastructure damage as recurring Mexico risks, but no such alert is currently live as of the Oct 11 page fetch despite active Hurricanes Isaias and Simon — meaning a sufficiently damaging landfall before Nov 1 (CDC's trigger #3: "infrastructure damage that would limit healthcare services availability") remains a plausible but unconfirmed pathway. https://www.cdc.gov/yellow-book/hcp/americas-caribbean/mexico.html

- [2026-07-07] Historical cadence confirms measles has already been a recurring North American THN trigger this year even before the October PAHO alert, with regional trackers noting Mexico led 2026 case counts at 
almost 11,000, followed by Guatemala, over 6,000, the United States over 2,000, and Canada over 1,000
 as of July — showing the underlying outbreak (not just the October PAHO alert) has been building for months without yet producing a new country-specific North American THN, suggesting CDC's bar for escalating beyond the global notice is relatively high. https://www.travelvax.com.au/travel-health-alerts/world-travel-health-alerts-july-2026-week-2

BOTTOM LINE: The clearest live mechanism for a "Yes" resolution is CDC escalating its standing global measles notice into a country-specific one for Mexico, Guatemala, or Canada in response to PAHO's Oct 8-9 "very high risk" assessment tied to South American mass gatherings, or CDC adding a new chikungunya notice for the newly-affected Saint Martin/Sint Maarten; a hurricane-driven disaster notice for Mexico is institutionally possible but not yet triggered. Working against "Yes" is that CDC has so far folded ongoing North American measles activity into its existing (non-October) global notice rather than issuing new country-specific postings, and chikungunya trends in the hemisphere are declining.

NOT FOUND: No CDC announcement or internal planning document indicating an imminent new North American THN; no confirmation of whether Saint Martin/Sint Maarten falls under CDC's "North America" THN classification versus a separate Caribbean/territorial listing; no post-Oct 11 landfall/damage report for Hurricanes Isaias or Simon confirming CDC disaster-notice criteria have been met.

### EXPERT VIEW
No dedicated prediction market, poll, or analyst forecast specifically addressing "will a North American country get a new CDC Travel Health Notice in October 2026" was found. This is a narrow, low-salience question that does not appear to be tracked by Polymarket, Kalshi, or Metaculus as a standalone market. However, adjacent markets and the primary CDC source provide useful context:

- [2026-01-19 to 2026-12-31] Polymarket's general market "CDC issues Level 3 warning by December 31?" (covering any disease, any country, not North-America-specific) was priced at 
"Ended: Dec 31" with ">99% chance"
, reflecting trader confidence that CDC maintains an active pipeline of escalating travel notices throughout 2026 — https://polymarket.com/event/cdc-issues-level-3-warning-by-december-31
- [2026-01-19] That same Polymarket market's context notes reasoned that 
"trader consensus centers on sustained measles transmission across multiple U.S. states and emerging international risks," with "active Level 2 notices for Ebola and chikungunya that demonstrate the agency's threshold for escalation when limited precautions exist"
 — https://polymarket.com/event/cdc-issues-level-3-warning-by-december-31
- [undated, ~145 days old] A separate Polymarket market on a Level 4 warning noted 
"No CDC Level 4 Travel Health Notices currently exist, as confirmed by official monitoring data showing no destinations meeting the extreme-risk threshold"
, indicating markets track the CDC notices page closely as the authoritative resolution source — https://polymarket.com/event/cdc-issues-level-4-warning-by-december-31-647
- [2026-10-02, last reviewed] The CDC's own Travel Health Notices page, the sole resolution source per the question's fine print, shows Level 1 entries for Costa Rica, Ecuador (incl. Galápagos), and Panama under 
"Level 1 - Practice Usual Precautions... Kenya, Malaysia, Sri Lanka, Bangladesh, Costa Rica, Marshall Islands, Vanuatu, Cuba, Ecuador, including the Galápagos Islands, Panama... Global Dengue... Updated Global Dengue October 02, 2026"
 — https://wwwnc.cdc.gov/travel/notices
- [undated snapshot, ~October 2026] The live CDC notices page lists Level 2 entries including 
"An increased number of cases of yellow fever have been reported in Colombia... Updated Yellow Fever in Colombia September 18, 2026"
 and 
"There is an outbreak of chikungunya in Nicaragua... Updated Chikungunya in Nicaragua September 03, 2026"
 — both South/Central American but neither is a fresh October 2026 North American entry — https://wwwnc.cdc.gov/travel/notices
- [2026-06-19] A historical pattern-tracker (FFF Enterprises newsletter) shows CDC has repeatedly added North American entries in recent months, e.g., 
"the CDC lists Ituri, Nord-Kivu... the CDC listed the following areas to its Level 1 THN this month... Manitoba, Canada, due to a hepatitis A virus (HAV) outbreak on June 4"
, illustrating a recurring base rate of North American THN issuances roughly every 1-2 months (Mexico RMSF Dec 2025, Canada hepatitis A June 2026, Nicaragua chikungunya Aug/Sep 2026) — https://www.fffenterprises.com/news/articles/fff-respiratory-newsletter-2026-06-19.html
- [date unclear, ~2026] A third-party outbreak tracker lists prior North-America-adjacent CDC notices such as 
"Level 2 - Chikungunya in French Guiana Level 2 - Chikungunya in French Guiana on June 4, 2026... There is an outbreak of chikungunya in French Guiana"
, underscoring the Americas region's elevated mosquito-borne disease activity in 2026 that has repeatedly generated new THNs — https://worldtravelcare.net/cdc-travel-health-notices/

BOTTOM LINE: No market or forecaster directly prices this specific North-America/October-2026 question, but adjacent Polymarket markets treat any new CDC escalation (Level 3+) as near-certain (>99%) over 2026, and the observed base rate of North American THN updates (Mexico, Canada, Nicaragua, French Guiana, Colombia) every 1-2 months throughout 2025-2026 implies elevated background likelihood of another North American notice appearing in October 2026, even absent a notice already confirmed post-October 11.

NOT FOUND: No Polymarket, Kalshi, or Metaculus market specifically tracking "North American country CDC THN in October 2026"; no explicit probability estimate or forecaster commentary isolating this exact resolution criterion; no confirmation (as of the searches performed) of any new North American THN dated after October 11, 2026.

### YES CASE
YES means: the CDC Travel Health Notices (THN) page lists at least one brand-new ("New," not merely "Updated") notice for a North American country — i.e., the US, Canada, Mexico, Central America, or the Caribbean, per CDC's regional classification — bearing an issue date between October 1 and October 31, 2026.

- [2026-10-10] CDC's own Travelers' Health landing page, fetched live, lists its three most recent top-line notices as "Updated Global Dengue October 02, 2026," "New Hepatitis A in Costa Rica September 18, 2026," and "New Paratyphoid Fever in Yemen August 26, 2026" — confirming a North American-region country (Costa Rica) received a brand-new THN as recently as September 18, 2026, just 23 days before the question's open date, which is a tighter and more recent gap than the Aug 3 Nicaragua example cited in the question framing. https://wwwnc.cdc.gov/travel

- [2026-10-09] CDC's national measles tracker shows 4,080 confirmed US measles cases for 2026 as of October 8, with 18–26 cases specifically tied to international visitors, indicating the outbreak CDC is already monitoring via a standing Level 1 Global Measles notice remains very active into October, a plausible trigger for an updated/escalated country-specific entry. https://www.cdc.gov/measles/data-research/index.html

- [2026-10-11] Mexico's ongoing measles emergency — over 10,920 cases and 13 deaths reported by mid-2026 per the UN/PAHO, swelling toward 18,440 cases by late June per Mexico's Ministry of Health — remains unresolved, and Mexico already carries a Level 1 Global Measles THN that CDC could at any time convert into a dedicated country-specific or escalated notice given continued transmission. https://news.un.org/en/story/2026/06/1167642

- [cadence evidence] Tallying the last 13 months of North America-linked "New" THNs (Oropouche/Cuba-Panama Sept 2025, Cuba chikungunya Dec 2025, Mexico RMSF Dec 2025, Canada hepatitis A June 2026, Haiti diphtheria June 2026, Nicaragua chikungunya Aug 2026, Costa Rica hepatitis A Sept 18 2026) shows a new North American entry roughly every 4-7 weeks, with the Sept 18 Costa Rica notice meaning the "expected" next new entry — by simple interval extrapolation — falls squarely within the mid-to-late October window the question covers.

- [2026-10-09] A Federal Register notice on the DRC Ebola outbreak confirms CDC is actively issuing and escalating new THNs on a rolling, almost weekly basis in 2026 (South Kivu added May 22, Haut-Uélé/Tshopo added Aug 4, new Order issued Sept 11), demonstrating the agency's current operational tempo for THN issuance is high, increasing the odds some disease signal (dengue, chikungunya, or RMSF resurgence) in Mexico, Central America, or the Caribbean crosses CDC's posting threshold before November 1. https://www.govinfo.gov/content/pkg/FR-2026-09-16/pdf/2026-18948.pdf

- [2026-10-02] CDC's live Global Dengue Level 1 notice — covering Costa Rica, Cuba, Panama, and Ecuador among others — was refreshed October 2, 2026 and explicitly states dengue is a year-round risk that "outbreaks commonly occur every 2-5 years," meaning any single country on that already-elevated list (several of which are North American/Caribbean) could be upgraded to its own standalone "New" notice if case counts spike further during October's hurricane season. https://wwwnc.cdc.gov/travel/notices

- [2026-10-09/10] Hurricane Isaias and Hurricane Simon are actively affecting the Gulf and Mexico's Pacific coast in October 2026; CDC has a documented history of issuing THNs for "natural and human-made disasters with severe environmental health risks" per its own THN criteria, giving a second, independent mechanism (storm-driven infrastructure/health risk) by which a new North American notice could be posted this month. https://wwwnc.cdc.gov/travel/notices.htm

BOTTOM LINE: The strongest YES path rests on CDC's demonstrated high-frequency cadence of new North American THNs (most recently Costa Rica hepatitis A on Sept 18, 2026, just three weeks before question open) combined with multiple live, unresolved regional threats — the Mexico/US measles surge, active Caribbean/Central American dengue and chikungunya circulation, and October hurricane activity — any one of which has historically prompted a fresh CDC posting within a similar time frame.

NOT FOUND: No CDC press release or THN dated after October 1, 2026 for any North American country as of this search; no official CDC statement signaling an imminent new notice; no confirmation of the exact original (non-"updated") posting date for several standing Level 1 entries (e.g., Mexico's Global Measles notice).

### NO CASE
YES means: the CDC Travel Health Notices page (wwwnc.cdc.gov/travel/notices) shows at least one notice for a US, Canadian, Mexican, Central American or Caribbean destination carrying a "New" issuance date in October 2026 (not merely an "Updated" refresh of an existing notice).

- [2026-10-11] As already fetched directly, the live CDC THN page's most recent North America-linked entries are dated June 4, 2026 (Canada hepatitis A) and December 23, 2025 (Mexico RMSF); no entry carries an October 2026 "New" tag as of question open. https://wwwnc.cdc.gov/travel/notices
- [2025-12-05] A historical snapshot of the CDC travel homepage shows that in the Oct–Dec 2025 window, the only "New" top-listed notices were Chikungunya in Bangladesh and Chikungunya in Sri Lanka (Dec 5, 2025) and Global Polio (Nov 25, 2025) — none North American — indicating CDC's "New" slots were filled by Asian/global items, not NA ones, for that stretch. https://wwwnc.cdc.gov/travel/page/new-cdc-travelers-health-website
- [2025-04-15 to 2025-12-23] The last North America-adjacent "New" THN before that was Yellow Fever in South America (Bolivia/Brazil/Colombia/Peru, April 15, 2025) and the next CDC North-America-specific new posting was not until Rocky Mountain Spotted Fever in Mexico on December 23, 2025 — an eight-month gap with zero new North American THNs, showing the posting cadence is lumpy with long dry spells, not a steady monthly drumbeat. https://wwwnc.cdc.gov/travel/notices/level1/yellow-fever-vaccine-adverse-effects
- [2025-10-01 to 2025-11-12] The U.S. federal government underwent a 43-day shutdown spanning all of October 2025 (the longest in U.S. history), a period that coincides with the eight-month North American THN gap noted above, suggesting shutdown-related staffing/administrative disruption can suppress new notice issuance during exactly the kind of month being forecast here. https://www.traveltourister.com/news/us-government-shutdown-october-2026-tsa-faa-flights-airport-queues-travel-guide/
- [2025-12-21] Despite Hurricane Melissa devastating the Caribbean in October 2025, CDC's resulting health guidance for Cuba, Puerto Rico and Jamaica did not surface as a formal "New" THN until roughly two months later (Dec 21, 2025), and even then it was framed as general dengue/Zika/respiratory guidance rather than a storm-specific new notice — showing CDC's disaster-triggered NA postings lag far behind the triggering event and often don't materialize as discrete "New" THNs at all. https://www.travelandtourworld.com/news/article/caribbean-travel-under-scrutiny-haiti-joins-cuba-jamaica-and-puerto-rico-in-facing-us-security-and-health-warnings-following-hurricane-aftermath-and-rising-illnesses/
- [2026-09-02] A continuing resolution signed September 2, 2026 funds the government only through December 11, 2026, meaning CDC publishing operations are nominally intact for all of October 2026 — removing the shutdown-suppression mechanism seen in October 2025, but this also means CDC attention in October 2026 is instead absorbed by non-NA crises (DRC/Uganda Ebola Bundibugyo, Saudi Arabia missile-related alerts, South Africa unrest) per the AskNews block, continuing status-quo inertia toward non-NA postings. https://www.traveltourister.com/news/us-government-shutdown-october-2026-tsa-faa-flights-airport-queues-travel-guide/
- [2026-10-02] The only October 2026 change visible on the live CDC page so far is a "last reviewed" refresh of the pre-existing Global Dengue notice (not a "New" issuance), confirming CDC's own distinction between "Updated" and "New" labels — and only "New" labels would satisfy strict resolution wording. https://wwwnc.cdc.gov/travel/notices
- [2026-10-08/09] CDC's active bandwidth in the Oct 1–11 window is demonstrably allocated to the DRC/Uganda Ebola Bundibugyo outbreak (updated Aug 28, 2026 THN) and domestic measles tracking, not to any North American disease cluster, reinforcing that no NA trigger is currently in CDC's queue. https://www.thetraveler.org/new-us-travel-warning-cites-rising-global-health-risks/

BOTTOM LINE: The literal CDC "New" vs. "Updated" distinction, an eight-month historical precedent of zero new North American THNs (April–December 2025) coinciding with the last October government shutdown, and the two-month-plus lag CDC has shown even for major Caribbean hurricane events, together support a real possibility that October 2026 passes with only "Updated" refreshes (Global Dengue, etc.) rather than a qualifying "New" North American notice, keeping NO firmly in play despite the sheet's own base-rate framing.

NOT FOUND: No CDC internal staffing or workload report for October 2026 specifically; no confirmation of whether CDC plans any hurricane-specific (Isaias/Simon) THN for Mexico or Central America; no official CDC statement distinguishing why some NA outbreaks (e.g., ongoing Mexico/Canada measles) have not yet triggered a THN as of October 11, 2026.

## Required pre-forecast walkthrough

Before giving probabilities, walk through these explicitly:
  (0) Resolution check: do the sources above show the resolving condition ALREADY met (or already impossible) as of today? If so, say which source and price it at the cap. Otherwise, name what would still have to happen and by when (the RESOLUTION date).
  (a) The time left until the question resolves.
  (b) The status quo outcome — what happens if nothing changes from today.
  (c) A brief scenario that results in NO.
  (d) A brief scenario that results in YES.

## Calibration guidance

- **Anchor on the status quo.** Require strong specific evidence to move far from it.
- 0.05 / 0.95 require strong, multi-source evidence. Avoid >0.97 or <0.03 unless the outcome is already settled or near-tautological — overconfident misses are punished heavily by the log score.
- **Prediction markets are a prior, not an anchor.** If the evidence lists a SAME QUESTION market, treat its price as a strong, well-calibrated prior and name the specific evidence the market lacks whenever you land more than ~15 percentage points from it. A RELATED market (different deadline, threshold or resolution) is context only — do not anchor on it. If no market is listed, there is none on this question; do not assume one.
- **Anchor on the resolution source.** If the evidence includes a RESOLUTION SOURCE block, the question resolves on what THAT page shows, not on what the world does. If it says the resolving condition is already met, the correct probability is at the cap (0.97-0.98); if definitively unmet with no path left, 0.02-0.03. Otherwise its current state is your status quo, and the gap between the source and reality (lagging updates, different metric, classification rules) is a first-class risk to price explicitly, not a footnote at 5%.
- **Treat research as fallible, not ground truth.** A single-source or "very recent" claim — especially one the evidence flags as unverified, possibly AI-generated, or low-credibility — must not drive you to near-certainty. When a load-bearing fact is unverified, keep at least 10-15% on the chance it is wrong.

## Output

Return ONLY valid JSON, no markdown fences:

{
  "rationale": "<address (0) (a) (b) (c) (d) above — 5-8 sentences total>",
  "p_yes": <float in [0.01, 0.99]>,
  "what_would_change_my_mind": "<1-2 sentences: what new info would push you above 70% or below 30%>"
}