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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 bulletin
Case total not available
Confirmed casesSum of reported illnesses
131
Countries affected
October 23, 2026
Most recent notice

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Outbreaks reported by month (Year to date)

A chart of outbreaks grouped by month.

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Source: WHO public dataLast updated

Summary (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

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Outbreak notices

Showing 21–31 of 31 notices

Global Notice Global Historical notice

Avian influenza – situation in Thailand

Start date
September 9, 2004
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Avian influenza A(H5N1)- update 33: Situation (human) in Thailand

Start date
March 17, 2004
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Avian influenza A(H5N1)- update 32: Situation (human) in Thailand

Start date
March 9, 2004
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Avian influenza A(H5N1) - update 30: Situation (human) in Thailand

Start date
February 27, 2004
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Avian influenza A(H5N1) - update 28: Reports of infection in domestic cats (Thailand), Situation (human) in Thailand, Situation (poultry) in Japan and China

Start date
February 20, 2004
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Avian influenza A(H5N1) - update 23: Situation (human) in Thailand

Start date
February 13, 2004
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Avian influenza A(H5N1) - update 18: FAO/OIE/WHO Technical Consultation on the Control of Avian Influenza, Situation (human) in Thailand and Viet Nam

Start date
February 5, 2004
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Avian influenza A(H5N1) - update 17: Situation (human) in Thailand and (poultry) in China, Indonesia and Worldwide

Start date
February 4, 2004
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Avian influenza A(H5N1) - update 15: Additional confirmed human case in Thailand; China announces suspected spread of infection in poultry; investigation of possible human-to-human transmission

Start date
February 2, 2004
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Avian influenza A(H5N1) in humans - update 9: Situation in Thailand, Overview of the current situation

Start date
January 27, 2004
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Avian influenza A(H5N1)- update 8: Situation in Thailand, Advice to international travellers

Start date
January 26, 2004
Last updated

Source: WHO

View Notice

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.

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