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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 3,061–3,080 of 3,201 notices

Global Notice Global Historical notice

Marburg haemorrhagic fever in Angola - update 3

Start date
March 29, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Marburg haemorrhagic fever in Angola - update 2

Start date
March 24, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Meningococcal disease in Chad

Start date
March 24, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Meningococcal disease in Sudan

Start date
March 23, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Suspected myocarditis in Sri Lanka

Start date
March 17, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Suspected Acute Haemorrhagic Fever Syndrome in Angola

Start date
March 17, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Plague in the Democratic Republic of the Congo - update 4

Start date
March 15, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Avian influenza – situation in Viet Nam - update 11

Start date
March 11, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Plague in the Democratic Republic of the Congo - update 3

Start date
March 9, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Avian influenza – situation in Viet Nam - update 10

Start date
March 7, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Plague in the Democratic Republic of the Congo - update 2

Start date
March 4, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Dengue haemorrhagic fever in Timor-Leste - update 4

Start date
March 1, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Plague in the Democratic Republic of the Congo

Start date
February 18, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Dengue haemorrhagic fever in Timor-Leste - update 3

Start date
February 15, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Meningococcal disease in Sudan

Start date
February 14, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Dengue haemorrhagic fever in Timor-Leste - update 2

Start date
February 10, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Avian influenza – situation in Cambodia - update 9

Start date
February 9, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Dengue haemorrhagic fever in Timor-Leste - update

Start date
February 3, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Avian influenza – situation in Viet Nam and Cambodia - update 8

Start date
February 2, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Acute haemorrhagic fever syndrome in Timor-Leste

Start date
January 31, 2005
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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