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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.

3,200
Total noticesEvery WHO Disease Outbreak News bulletin
Case total not available
Confirmed casesSum of reported illnesses
131
Countries affected
October 15, 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 Congo6
United States2
Saudi Arabia1
Russia1
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Outbreak notices

Showing 361–380 of 3,200 notices

Global Notice Global Historical notice

Legionellosis - Poland

Start date
September 14, 2023
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Influenza A (H1N1) variant virus - the Netherlands

Start date
September 13, 2023
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Diphtheria-Nigeria

Start date
September 13, 2023
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Middle East respiratory syndrome coronavirus - Saudi Arabia

Start date
August 29, 2023
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Measles - Chile

Start date
August 23, 2023
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Influenza A (H1N2) variant virus-United States of America

Country
United States
Start date
August 11, 2023
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Dengue - Bangladesh

Start date
August 11, 2023
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

Circulating vaccine-derived poliovirus type 2 – United Republic of Tanzania

Start date
July 28, 2023
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Guillain-Barré Syndrome – Peru

Start date
July 25, 2023
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Middle East respiratory syndrome coronavirus –United Arab Emirates

Start date
July 24, 2023
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Dengue – the Region of the Americas

Start date
July 19, 2023
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Influenza A(H5N1) in cats – Poland

Start date
July 16, 2023
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Enterovirus-Echovirus 11 Infection - the European Region

Start date
July 7, 2023
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Influenza A H1N1 variant virus - Brazil

Start date
June 16, 2023
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Marburg virus disease - Equatorial Guinea

Start date
June 9, 2023
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Marburg virus disease - United Republic of Tanzania

Start date
June 2, 2023
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Outbreak of suspected fungal meningitis associated with surgical procedures performed under spinal anaesthesia – the United States of America and Mexico

Country
United States
Start date
June 1, 2023
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Enterovirus Infection – France

Start date
May 31, 2023
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Avian Influenza A H5N1 - United Kingdom of Great Britain and Northern Ireland

Start date
May 30, 2023
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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