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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 25, 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

New case of laboratory-confirmed SARS in Guangdong, China - update 5

Start date: January 31, 2004
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Avian influenza A(H5N1) - update 13: China confirms spread of infection in poultry, Development of an H5N1 vaccine for humans: need for samples and viruses, Protection of workers involved in culling operations

Start date: January 30, 2004
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Avian influenza A(H5N1) in humans - update 12: Prevention of further cases of H5N1 disease in humans,Investigation of the origins of the current outbreaks in poultry

Start date: January 29, 2004
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Cholera in Chad, Mozambique and Zambia

Start date: January 28, 2004
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Avian influenza A(H5N1) in humans - update 11: Note to national authorities, Situation in Viet Nam, Rapid - and safe - culling of infected poultry: the first line of defence for protecting international public health

Start date: January 28, 2004
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Avian influenza A(H5N1) in China - update 10

Start date: January 27, 2004
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Avian influenza A(H5N1) in humans - update 9: Situation in Thailand, Overview of the current situation

Start date: January 27, 2004
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Avian influenza A(H5N1)- update 8: Situation in Thailand, Advice to international travellers

Start date: January 26, 2004
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Avian influenza A(H5N1)- update 7: Two further cases confirmed in Viet Nam, Overview of the current situation, Implications for food safety

Start date: January 24, 2004
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Avian influenza A(H5N1) in humans in Thailand - update 6

Start date: January 23, 2004
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Avian influenza H5N1 infection in humans: urgent need to eliminate the animal reservoir - update 5

Start date: January 22, 2004
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Human influenza A/H3N2 activity increases in many countries in central and eastern Europe - update 8

Start date: January 21, 2004
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Development of a vaccine effective against avian influenza H5N1 infection in humans - update 4

Start date: January 20, 2004
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Avian influenza A(H5N1) in humans in Viet Nam - update 3

Start date: January 19, 2004
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Avian influenza A(H5N1) in humans in Viet Nam and in poultry in Asian countries - update 2

Start date: January 16, 2004
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Avian influenza A(H5N1) in humans in Viet Nam and poultry in Asia - update

Start date: January 14, 2004
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Human influenza A(H3N2) activity remains widespread in many countries - update 7

Start date: January 13, 2004
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Update 3: Announcement of suspected SARS case in southern China; Investigation of source of infection for confirmed case begins tomorrow

Start date: January 8, 2004
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Human influenza activity still increasing in many countries and moving eastwards - update 6

Start date: January 7, 2004
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Ebola haemorrhagic fever in the Republic of the Congo - update 6

Start date: January 6, 2004
Last updated: July 21, 2026 ET

Data last updated: October 25, 2026 ET

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