Global Notice Global Historical noticeProvisional
Avian Influenza A(H5N5)- United States of America
- Country
- United States
- Start date
- December 5, 2025
- Last updated
Data Explorer
Research historical outbreak investigations and the full recall archive, with charts, trends, and advanced filters. Looking for what's happening right now instead? See current Health Alerts.
Outbreak notice totals
All-time counts across every WHO Disease Outbreak News bulletin in Public Health Trace.
3,201
Total noticesEvery WHO Disease Outbreak News bulletinCase total not available
Confirmed casesSum of reported illnesses131
Countries affectedOctober 23, 2026
Most recent noticeDownload matching outbreaks as CSV
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A chart of outbreaks grouped by month.
Download CSVSummary (Year to date)
- 27 outbreaks have been reported year to date.
- Sep 2026 was 33% lower than the previous complete period (Aug 2026: 3).
- The highest complete period was May 2026 (7).
- Oct 2026 is incomplete and not included in the figures above.
- Complete data
- Incomplete
A bar chart of the number of matching outbreaks by disease.
| Disease | Outbreaks |
|---|---|
| Salmonellosis | 1 |
A bar chart of the number of matching notices by country.
| Country | Notices |
|---|---|
| United States | 62 |
| Disease | Outbreaks |
|---|---|
| Salmonellosis | 1 |
Outbreak notices
Global Notice Global Historical notice
Measles - United States of America
- Country
- United States
- Start date
- March 27, 2025
- Last updated
Global Notice Global Historical notice
Avian Influenza A(H5N1) – United States of America
- Country
- United States
- Start date
- April 9, 2024
- Last updated
Global Notice Global Historical notice
Anthrax - United States of America
- Country
- United States
- Start date
- March 14, 2024
- Last updated
Global Notice Global Historical notice
Anthrax - United States of America
- Country
- United States
- Start date
- March 14, 2024
- Last updated
Global Notice Global Historical notice
West Nile virus - United States of America
- Country
- United States
- Start date
- March 13, 2024
- Last updated
Global Notice Global Historical notice
West Nile virus - United States of America
- Country
- United States
- Start date
- March 13, 2024
- Last updated
Global Notice Global Historical notice
West Nile virus - United States of America
- Country
- United States
- Start date
- March 13, 2024
- Last updated
Global Notice Global Historical notice
West Nile virus - United States of America
- Country
- United States
- Start date
- March 13, 2024
- Last updated
Global Notice Global Historical notice
West Nile virus - United States of America
- Country
- United States
- Start date
- March 13, 2024
- Last updated
Global Notice Global Historical notice
Influenza A (H1N2) variant virus-United States of America
- Country
- United States
- Start date
- August 11, 2023
- Last updated
Global Notice Global Historical notice
Outbreak of suspected fungal meningitis associated with surgical procedures performed under spinal anaesthesia – the United States of America and Mexico
- Country
- United States
- Start date
- June 1, 2023
- Last updated
Global Notice Global Historical notice
Detection of circulating vaccine derived polio virus 2 (cVDPV2) in environmental samples– the United Kingdom of Great Britain and Northern Ireland and the United States of America
- Country
- United States
- Start date
- September 14, 2022
- Last updated
Global Notice Global Historical notice
Avian Influenza A(H5N1) – United States of America
- Country
- United States
- Start date
- May 6, 2022
- Last updated
Global Notice Global Historical notice
Multi-country outbreak of Salmonella Typhimurium linked to chocolate products – Europe and the United States of America
- Country
- United States
- Start date
- April 27, 2022
- Last updated
Global Notice Global Historical notice
Monkeypox - United States of America
- Country
- United States
- Start date
- November 25, 2021
- Last updated
Global Notice Global Historical notice
Monkeypox - the United States of America
- Country
- United States
- Start date
- July 27, 2021
- Last updated
Global Notice Global Historical notice
2002 - West Nile virus in the United States - Update 3
- Country
- United States
- Start date
- June 7, 2021
- Last updated
Global Notice Global Historical notice
2002 - West Nile virus in the United States - Update 9
- Country
- United States
- Start date
- June 7, 2021
- Last updated
Global Notice Global Historical notice
2002 - West Nile virus in the United States - Update 4
- Country
- United States
- Start date
- June 7, 2021
- Last updated
Data last updated:
Outbreak investigations may be ongoing; case counts, hospitalizations, and deaths are updated by CDC as investigations continue. Read the full medical disclaimer.