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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

Country: Chad ×
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Outbreaks reported by month (Year to date)

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Source: WHO public dataLast updated October 28, 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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Outbreak notices

Global Notice Global Historical notice

Hepatitis E - Chad

Start date: May 8, 2024
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Cholera - Chad

Start date: March 13, 2024
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Cholera - Chad

Start date: March 13, 2024
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Cholera - Chad

Start date: March 13, 2024
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Cholera - Chad

Start date: March 13, 2024
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Dengue - Chad

Start date: October 16, 2023
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Hepatitis E – Chad

Start date: January 24, 2023
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

1998 - Meningitis in Chad

Start date: June 8, 2021
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

1996 - Cerebrospinal meningitis in Chad

Start date: June 8, 2021
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

1996 - Cholera in Chad

Start date: June 8, 2021
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

1996 - Cholera in Chad - Update

Start date: June 8, 2021
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Poliomyelitis in Chad

Start date: June 7, 2021
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

2001 - Cholera in Chad - Update 3

Start date: June 7, 2021
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

2001 - Cholera in Chad - Update

Start date: June 7, 2021
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

2001 - Cholera in Chad

Start date: June 7, 2021
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Meningococcal disease in Chad

Start date: June 4, 2021
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Chikungunya – Chad

Start date: March 4, 2021
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Hepatitis E – Chad

Start date: January 24, 2017
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Yellow fever in Chad

Start date: February 14, 2013
Last updated: July 21, 2026 ET

Global Notice Global Historical notice

Poliomyelitis in Chad

Start date: June 10, 2011
Last updated: July 21, 2026 ET

Data last updated: October 28, 2026 ET

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