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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)

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Source: WHO public dataLast updated October 24, 2026 ET

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.

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No disease breakdown is available for these filters.

Notices by country

Notices by country
Country	Notices
Democratic Republic of the Congo	7
United States	2
Saudi Arabia	1
Russia	1

Outbreak notices

Global Notice Global Historical notice

Avian influenza – situation in Viet Nam - update 7

Start date: December 11, 2009
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Yellow Fever in the Central African Republic

Start date: December 1, 2009
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Avian influenza - situation in Egypt - update 25

Start date: November 27, 2009
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Avian influenza - situation in Egypt - update 24

Start date: November 20, 2009
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Dengue fever in Cape Verde - update 1

Start date: November 18, 2009
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Pandemic (H1N1) 2009, Ukraine - update 2

Start date: November 17, 2009
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Pandemic (H1N1) 2009, Ukraine - update 1

Start date: November 3, 2009
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Pandemic (H1N1) 2009, Ukraine

Start date: November 1, 2009
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Dengue fever in Cape Verde

Start date: October 30, 2009
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Yellow fever in Cameroon

Start date: October 1, 2009
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Avian influenza - situation in Egypt - update 23

Start date: September 24, 2009
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Avian influenza - situation in Egypt - update 22

Start date: August 31, 2009
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Avian influenza - situation in Egypt - update 21

Start date: August 11, 2009
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Polio in Nigeria

Start date: July 17, 2009
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Avian influenza - situation in Egypt - update 20

Start date: July 1, 2009
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Cholera in Zimbabwe - update 4

Start date: June 9, 2009
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Avian influenza - situation in Egypt - update 19

Start date: June 2, 2009
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Avian influenza - situation in Egypt - update 17

Start date: May 28, 2009
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Avian influenza - situation in Egypt - update 16

Start date: May 22, 2009
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Influenza A(H1N1) - update 31

Start date: May 17, 2009
Last updated: July 21, 2026 ET

Data last updated: October 24, 2026 ET

Outbreak investigations may be ongoing; case counts, hospitalizations, and deaths are updated by CDC as investigations continue. Read the full medical disclaimer.