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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 1,761–1,780 of 3,200 notices

Global Notice Global Historical notice

Yellow fever – France – French Guiana

Start date
August 30, 2017
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Middle East respiratory syndrome coronavirus – United Arab Emirates

Start date
August 28, 2017
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Chikungunya – France

Start date
August 25, 2017
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Middle East respiratory syndrome coronavirus – Saudi Arabia

Start date
August 17, 2017
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Influenza A H7N9 virus – China

Start date
August 7, 2017
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Dengue – Côte d’Ivoire

Start date
August 4, 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

Global Notice Global Historical notice

Dengue – Sri Lanka

Start date
July 19, 2017
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Influenza A H7N9 virus – China

Start date
July 19, 2017
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Cholera – Nigeria

Start date
July 12, 2017
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Hepatitis E – Nigeria

Start date
July 12, 2017
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Meningococcal meningitis – Liberia

Start date
July 6, 2017
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Middle East respiratory syndrome coronavirus – Saudi Arabia

Start date
July 6, 2017
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Middle East respiratory syndrome coronavirus – Lebanon

Start date
July 4, 2017
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Middle East respiratory syndrome coronavirus – Saudi Arabia

Start date
June 28, 2017
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Lassa Fever – Nigeria

Start date
June 28, 2017
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Influenza A H7N9 virus – China

Start date
June 28, 2017
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Middle East respiratory syndrome coronavirus – Saudi Arabia

Start date
June 19, 2017
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Circulating vaccine-derived poliovirus type 2 – Democratic Republic of the Congo

Start date
June 13, 2017
Last updated

Source: WHO

View Notice

Global Notice Global Historical notice

Circulating vaccine-derived poliovirus type 2 – Syrian Arab Republic

Start date
June 13, 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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