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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.

3,195
Total noticesEvery WHO Disease Outbreak News bulletin
Case total not available
Confirmed casesSum of reported illnesses
131
Countries affected
August 28, 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)

  • 25 outbreaks have been reported year to date.
  • Aug 2026 was 0% higher than the previous complete period (Jul 2026: 3).
  • The highest complete period was May 2026 (7).
  • Sep 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 Congo3
United States3
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Outbreak notices

Showing 1–20 of 3,195 notices

Global Notice Global 2026 noticeProvisional

Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo

Country
Democratic Republic of the Congo
Start date
August 28, 2026
Last updated

Source: WHO

View Notice

Global Notice Global 2026 noticeProvisional

Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo

Country
Democratic Republic of the Congo
Start date
August 14, 2026
Last updated

Source: WHO

View Notice

Global Notice Global 2026 noticeProvisional

Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo

Country
Democratic Republic of the Congo
Start date
August 1, 2026
Last updated

Source: WHO

View Notice

Global Notice Global 2026 noticeProvisional

Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo & Uganda

Start date
July 17, 2026
Last updated

Source: WHO

View Notice

Global Notice Global 2026 noticeProvisional

Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo & Uganda

Start date
July 3, 2026
Last updated

Source: WHO

View Notice

Global Notice Global 2026 noticeProvisional

Hantavirus outbreak linked to cruise ship travel, Multi-locations

Start date
July 2, 2026
Last updated

Source: WHO

View Notice

Global Notice Global 2026 noticeProvisional

Nipah virus disease - India

Start date
June 25, 2026
Last updated

Source: WHO

View Notice

Global Notice Global 2026 noticeProvisional

Yellow fever - Global

Start date
June 24, 2026
Last updated

Source: WHO

View Notice

Global Notice Global 2026 noticeProvisional

Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo & Uganda

Start date
June 19, 2026
Last updated

Source: WHO

View Notice

Global Notice Global 2026 noticeProvisional

Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo & Uganda

Start date
June 13, 2026
Last updated

Source: WHO

View Notice

Global Notice Global 2026 noticeProvisional

Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo & Uganda

Start date
June 8, 2026
Last updated

Source: WHO

View Notice

Global Notice Global 2026 noticeProvisional

Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo & Uganda

Start date
May 29, 2026
Last updated

Source: WHO

View Notice

Global Notice Global 2026 noticeProvisional

Hantavirus outbreak linked to cruise ship travel, Multi-locations

Start date
May 28, 2026
Last updated

Source: WHO

View Notice

Global Notice Global 2026 noticeProvisional

Ebola disease caused by Bundibugyo virus – Democratic Republic of the Congo

Start date
May 22, 2026
Last updated

Source: WHO

View Notice

Global Notice Global 2026 noticeProvisional

Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo & Uganda

Start date
May 17, 2026
Last updated

Source: WHO

View Notice

Global Notice Global 2026 noticeProvisional

Hantavirus cluster linked to cruise ship travel, Multi-country

Start date
May 13, 2026
Last updated

Source: WHO

View Notice

Global Notice Global 2026 noticeProvisional

Hantavirus cluster linked to cruise ship travel, Multi-country

Start date
May 8, 2026
Last updated

Source: WHO

View Notice

Global Notice Global 2026 noticeProvisional

Hantavirus cluster linked to cruise ship travel, Multi-country

Start date
May 4, 2026
Last updated

Source: WHO

View Notice

Global Notice Global 2026 noticeProvisional

Measles - Bangladesh

Start date
April 23, 2026
Last updated

Source: WHO

View Notice

Global Notice Global 2026 noticeProvisional

Avian Influenza A(H9N2) - Italy

Start date
April 10, 2026
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.