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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

Middle East respiratory syndrome coronavirus (MERS-CoV) – Saudi Arabia

Start date: December 17, 2014
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

West Nile virus – Brazil

Start date: December 15, 2014
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Middle East respiratory syndrome coronavirus (MERS-CoV) – Saudi Arabia

Start date: December 2, 2014
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Plague – Madagascar

Start date: November 21, 2014
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Middle East respiratory syndrome coronavirus (MERS-CoV) – Saudi Arabia

Start date: November 21, 2014
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Human infection with avian influenza A(H7N9) virus – China

Start date: November 18, 2014
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Poliovirus in South Sudan and Madagascar

Start date: November 14, 2014
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Legionnaires' disease – Portugal

Start date: November 13, 2014
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Marburg virus disease - Uganda

Start date: November 13, 2014
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Middle East respiratory syndrome coronavirus (MERS-CoV) – Saudi Arabia

Start date: November 7, 2014
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Middle East respiratory syndrome coronavirus (MERS-CoV) – Saudi Arabia

Start date: November 3, 2014
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Ebola virus disease – Mali

Start date: October 31, 2014
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Middle East respiratory syndrome coronavirus (MERS-CoV) – Qatar

Start date: October 31, 2014
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Human infection with avian influenza A(H7N9) virus – China

Start date: October 29, 2014
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Middle East respiratory syndrome coronavirus (MERS-CoV) – Turkey

Start date: October 24, 2014
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Chikungunya – France

Start date: October 23, 2014
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Middle East respiratory syndrome coronavirus (MERS-CoV) – Saudi Arabia

Start date: October 16, 2014
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Marburg virus disease - Uganda

Start date: October 10, 2014
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Ebola virus disease – Spain

Start date: October 9, 2014
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Middle East respiratory syndrome coronavirus (MERS-CoV) – Austria

Start date: October 2, 2014
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.