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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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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 Congo7
United States2
Saudi Arabia1
Russia1
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Outbreak notices

Showing 2,421–2,440 of 3,201 notices

Global Notice Global Historical notice

Ebola in Uganda

Start date
November 23, 2012
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Yellow fever in Sudan - update

Start date
November 22, 2012
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Ebola in Uganda

Start date
November 17, 2012
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Yellow fever in Sudan

Start date
November 13, 2012
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Rift Valley fever in Mauritania

Start date
November 1, 2012
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Marburg haemorrhagic fever in Uganda - update

Start date
October 31, 2012
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Ebola outbreak in Democratic Republic of Congo – update

Start date
October 26, 2012
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Marburg haemorrhagic fever in Uganda - update

Start date
October 22, 2012
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Marburg haemorrhagic fever in Uganda

Start date
October 21, 2012
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Dengue Fever in Madeira, Portugal

Start date
October 17, 2012
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Novel coronavirus infection - update

Start date
October 10, 2012
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Ebola outbreak in Democratic Republic of Congo – update

Start date
October 8, 2012
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

End of Ebola outbreak in Uganda

Start date
October 4, 2012
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Novel coronavirus infection - update - revised interim case definition

Start date
September 29, 2012
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Novel coronavirus infection - update

Start date
September 28, 2012
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Ebola outbreak in Democratic Republic of Congo – update

Start date
September 27, 2012
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Novel coronavirus infection - update

Start date
September 25, 2012
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Novel coronavirus infection in the United Kingdom

Start date
September 23, 2012
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Ebola outbreak in Democratic Republic of Congo – update

Start date
September 14, 2012
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Hantavirus pulmonary syndrome – Yosemite National Park, United States of America – update

Country
United States
Start date
September 12, 2012
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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