Daily Signal Scan
October 3 Global Signal Scan: two vector-borne signals added, West Nile, Ebola and measles updated
Scan ledger
- Retained
- 15
- Added
- 2
- Updated
- 3
- Removed
- 0
20 active signals: 2 added, 3 updated, 15 retained, 0 removed. 1 global watch layer carried separately and not included in that count. 2 signals remain in the resolved archive.
Scan summary
The October 3 scan holds 20 active signals: 2 added, 3 updated, 15 retained and 0 removed. Locally acquired dengue and chikungunya in mainland EU/EEA were added. West Nile virus in Europe moved to 1,765 infections in 202 affected areas, the Ebola record gained ECDC's report of a fourth imported, medically evacuated case in the Netherlands, and U.S. measles moved to 3,887 confirmed cases through October 1. Reviewed but not promoted: FDA's October 2 conclusion of its iceberg-lettuce Cyclospora investigation (recorded on the resolved archive), CDC's closure of the jalapeño-linked Salmonella outbreak (not on the active desk, so no record changed), a sprouting-seed recall with no reported illnesses, and a Zambia preparedness training.
Cite and share
Cite this edition
St. John, E. (2026, October 4). October 3 Global Signal Scan: two vector-borne signals added, West Nile, Ebola and measles updated (October 3, 2026 scan edition). Today in Public Health. https://www.todayinpublichealth.com/signals/daily/2026-10-03
Today in Public Health. "October 3 Global Signal Scan: two vector-borne signals added, West Nile, Ebola and measles updated." (October 3, 2026 scan edition). Edited by Elijah St. John. Published October 4, 2026. https://www.todayinpublichealth.com/signals/daily/2026-10-03
How this scan was run
This edition's data cutoff is October 3, 2026, and it was published on TiPH on October 4, 2026. Counts are measured against the October 2 edition as originally published. The global El Niño watch layer is carried separately and is not included in the active count. Event dates, authority update dates, TiPH detection dates and TiPH publication dates are stored separately on each signal. A record was updated only when an authoritative source changed what it says.
Read the full desk methodology or repeat these checks yourself.
Authoritative sources checked
Signals reverified in this edition
- DRC Bundibugyo Ebola reaches 8,224 confirmed cases in WHO's provisional daily tableCriticalDemocratic Republic of the Congo · 63 health zones in seven provincesHuman
- CDC reports 3,887 confirmed U.S. measles cases through October 1SevereUnited StatesHuman
- Suspected dengue cases and deaths rose in Bangladesh in mid-SeptemberSevereBangladesh · national surveillance, not a single epicentreHuman
- Prolonged flooding displaces more than 260,000 people in IndiaSevereMultiple Indian states; fresh impacts in KeralaEarth
- Nepal continues disease-prevention response after destructive floodsSevereRasuwa, Nuwakot and Dhading, NepalEarth
- West Nile virus infections are spread across 16 European countries, not one uniform riskSignificant16 European countries · 202 affected areas — distributed seasonal pattern, not a single epicentreHuman
- France reports 124 locally acquired chikungunya cases across 19 clusters; Italy oneSignificantMainland EU/EEA · France and Italy — local clusters, not a single epicentreHuman
- Raw-milk cheese linked to 13 E. coli illnesses, eight hospitalizations, and three HUS casesSignificantUnited States · nationwide distribution, not a single epicentreFood
- Broccoli sprouts linked to a Salmonella Bovismorbificans outbreak in six statesSignificantUnited States · sold in Idaho, Montana, and Washington; may have moved fartherFood
- U.S. rabies-exposure advisory remains activeSignificantUnited States; multiple jurisdictionsAnimal
- Chikungunya outbreak continues in northwest Costa RicaSignificantNorthwest Costa RicaHuman
- Yellow-fever activity remains elevated in Tolima, ColombiaSignificantTolima Department, ColombiaHuman
- Influenza activity rising across the Western PacificSignificantWHO Western Pacific RegionGlobal
- FDA opens traceback into a new 11-case Listeria outbreak with no product identifiedSignificantUnited States · national investigation, product unidentifiedFood
- Unidentified-source E. coli O157:H7 outbreak rises to 38 casesSignificantUnited States · national investigation, product unidentifiedFood
- Separate unidentified-source Listeria outbreak rises to 44 casesSignificantUnited States · national investigation, product unidentifiedFood
- Alfalfa sprout outbreak linked to seed lot SAL2-24JB reaches 76 illnesses in 16 statesSignificantUnited States · 16 illness states; wider product distributionFood
- Italy reports 59 locally acquired dengue cases across nine clusters; France sixWatchMainland EU/EEA · Italy and France — local clusters, not a single epicentreHuman
- Hepatitis A outbreak reported in Costa Rica’s San José ProvinceWatchSan José Province, Costa RicaHuman
- U.S. Cyclospora surge remains under declining-season monitoringWatchUnited StatesFood
This edition is situational awareness for public-health professionals and the public. It is not medical, clinical, or travel advice. Every signal is reverified against its authoritative primary sources; the desk adds a record only when a current source supports it, so an absence of new signals never implies an absence of global health risk.