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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.

3,200
Total noticesEvery WHO Disease Outbreak News bulletin
Case total not available
Confirmed casesSum of reported illnesses
131
Countries affected
October 15, 2026
Most recent notice

Download matching outbreaks as CSV

CSV exports include up to 5,000 matching rows (applying your current filters), not the full dataset if it's larger.

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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 Congo6
United States2
Saudi Arabia1
Russia1
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Outbreak notices

Showing 1,281–1,300 of 3,200 notices

Global Notice Global Historical notice

1999 - Legionellosis in Netherlands

Start date
June 7, 2021
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

2000 - Viral haemorrhagic fever/Marburg in the Democratic Republic of Congo - Update 9

Start date
June 7, 2021
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

1999 - Cholera in Africa

Start date
June 7, 2021
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

1999 - Yellow fever in Bolivia - Update

Start date
June 7, 2021
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

1999 - Meningococcal disease in Senegal

Start date
June 7, 2021
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

2000 - Staphylococcal food intoxication in Japan

Start date
June 7, 2021
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

2000 - Meningococcal disease in Ethiopia

Start date
June 7, 2021
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

2000 - Rift Valley fever in Saudi Arabia - Update 2

Start date
June 7, 2021
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

2000 - Dysentery in Sierra Leone

Start date
June 7, 2021
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

2000 - Suspected Lassa fever, UK

Start date
June 7, 2021
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

1999 - Malaria in Burundi

Start date
June 7, 2021
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

2000 - Acute haemorrhagic fever syndrome in Yemen

Start date
June 7, 2021
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

1999 - Meningococcal disease in Sudan - Update 2

Start date
June 7, 2021
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

1999 - West Nile fever in the United States of America (update on St. Louis encephalitis)

Country
United States
Start date
June 7, 2021
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

1999 - Cholera in Kenya

Start date
June 7, 2021
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

1999- Meningococcal disease in Ethiopia

Start date
June 7, 2021
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

1999 - Cholera in Zambia

Start date
June 7, 2021
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

1999- Polio in Angola

Start date
June 7, 2021
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

1999 - Viral haemorrhagic fever/Marburg in the Democratic Republic of the Congo - Update 8

Start date
June 7, 2021
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

2000 - Imported case of Lassa fever in Germany

Start date
June 7, 2021
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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