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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 Congo1
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Outbreak notices

Showing 1–20 of 26 notices

Global Notice Global 2026 noticeProvisional

Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo, Kenya and Nigeria

Country
Democratic Republic of the Congo
Start date
October 23, 2026
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Rift Valley fever - Kenya

Start date
March 12, 2024
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Wild poliovirus type 1 - Kenya

Start date
March 12, 2024
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Rift Valley Fever - Kenya and Somalia

Start date
March 7, 2024
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Circulating vaccine-derived poliovirus type 2 – Kenya

Start date
July 28, 2023
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Yellow Fever - Kenya

Start date
March 25, 2022
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

1997 - Cholera in Kenya

Start date
June 8, 2021
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

1998 - Rift Valley fever in Kenya - Update

Start date
June 8, 2021
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

1997 - Cholera in Kenya

Start date
June 8, 2021
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

1998 - Rift Valley Fever in Kenya and Somalia - Update 2

Start date
June 8, 2021
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

1998 - Rift Valley fever in Kenya

Start date
June 8, 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 - Malaria in Kenya

Start date
June 7, 2021
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Rift Valley fever – Kenya

Start date
June 3, 2021
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Chikungunya – Kenya

Start date
June 3, 2021
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Rift Valley fever – Kenya

Start date
March 4, 2021
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Cholera – Kenya

Start date
December 11, 2017
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Marburg virus disease – Uganda and Kenya

Start date
November 15, 2017
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Marburg virus disease – Uganda and Kenya

Start date
November 7, 2017
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Cholera – Kenya

Start date
July 21, 2017
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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