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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

No disease breakdown is available for these filters.

Notices by country

A bar chart of the number of matching notices by country.

Notices by country
CountryNotices
Democratic Republic of the Congo7
United States2
Saudi Arabia1
Russia1
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Outbreak notices

Showing 3,101–3,120 of 3,201 notices

Global Notice Global Historical notice

Avian influenza – situation in Asia: altered role of domestic ducks

Start date
October 29, 2004
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Avian influenza – situation in Thailand; additional fatal case confirmed

Start date
October 25, 2004
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Avian influenza – situation in Thailand; status of pandemic vaccine development

Start date
October 4, 2004
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Avian influenza – situation in Thailand

Start date
September 28, 2004
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Hepatitis E in Chad - update 4

Start date
September 27, 2004
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Hepatitis E in Chad - update 3

Start date
September 15, 2004
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Yellow fever in Venezuela

Start date
September 14, 2004
Last updated

Source: WHO

View Notice

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

Hepatitis E in Sudan - update 2

Start date
September 8, 2004
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Avian influenza – update: situation in Viet Nam

Start date
September 7, 2004
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Hepatitis E in Chad - update 2

Start date
September 6, 2004
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Rabies in France

Start date
September 1, 2004
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Hepatitis E in Chad - update

Start date
August 31, 2004
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Hepatitis E in Sudan - update

Start date
August 30, 2004
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Avian influenza - update: Implications of H5N1 infections in pigs in China

Start date
August 25, 2004
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Avian influenza: H5N1 detected in pigs in China

Start date
August 20, 2004
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Hepatitis E in Chad

Start date
August 19, 2004
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Avian influenza – situation in Viet Nam

Start date
August 18, 2004
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Human cases of avian influenza: situation in Viet Nam

Start date
August 13, 2004
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Three fatal human cases of avian influenza confirmed in Viet Nam

Start date
August 12, 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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