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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 3,021–3,040 of 3,201 notices

Global Notice Global Historical notice

Poliomyelitis in Indonesia - update 4

Start date
June 15, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Avian influenza – situation in Viet Nam – update 20

Start date
June 14, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Poliomyelitis in Indonesia - update 3

Start date
June 14, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Poliomyelitis in Indonesia - update 2

Start date
June 9, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Avian influenza – situation in Viet Nam – update 19

Start date
June 8, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Marburg haemorrhagic fever in Angola – update 21

Start date
June 7, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Poliomyelitis in Indonesia

Start date
June 6, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Meningococcal disease in India - update 3

Start date
May 30, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Marburg haemorrhagic fever in Angola – update 20

Start date
May 27, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Ebola haemorrhagic fever in the Republic of the Congo - update

Start date
May 25, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Avian influenza – cumulative number of cases – update 18

Start date
May 19, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Marburg haemorrhagic fever in Angola – update 19

Start date
May 18, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Meningococcal disease in India - update 2

Start date
May 17, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Cholera in Senegal- update 4

Start date
May 13, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Meningococcal disease in India - update

Start date
May 12, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Marburg haemorrhagic fever in Angola – update 18

Start date
May 11, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Meningococcal disease in India

Start date
May 9, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Marburg haemorrhagic fever in Angola - update 17

Start date
May 6, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Avian influenza – situation in Cambodia - update 17

Start date
May 4, 2005
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Marburg haemorrhagic fever in Angola - update 16

Start date
April 29, 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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