Global Notice Global Historical notice
Early start of human influenza activity in the northern hemisphere
- Start date
- June 7, 2021
- Last updated
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 bulletinCase total not available
Confirmed casesSum of reported illnesses131
Countries affectedOctober 15, 2026
Most recent noticeDownload matching outbreaks as CSV
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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A chart of outbreaks grouped by month.
Download CSVSummary (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.
A bar chart of the number of matching notices by country.
| Country | Notices |
|---|---|
| Democratic Republic of the Congo | 6 |
| United States | 2 |
| Saudi Arabia | 1 |
| Russia | 1 |
Outbreak notices
Global Notice Global Historical notice
Severe Acute Respiratory Syndrome (SARS) multi-country outbreak - Update 8
- Start date
- June 7, 2021
- Last updated
Global Notice Global Historical notice
Update 85 - WHO case definition for diagnostic purposes, Hong Kong close to being removed from list of areas with local transmission
- Start date
- June 7, 2021
- Last updated
Global Notice Global Historical notice
Ebola haemorrhagic fever in the Republic of the Congo - update 5
- Start date
- June 7, 2021
- Last updated
Global Notice Global Historical notice
Suspected Severe Acute Respiratory Syndrome (SARS) case in southern China - update
- Start date
- June 7, 2021
- Last updated
Global Notice Global Historical notice
Widespread human influenza activity persists in northern hemisphere - update 5
- Start date
- June 7, 2021
- Last updated
Global Notice Global Historical notice
Severe Acute Respiratory Syndrome (SARS) - multi-country outbreak - Update 33
- Start date
- June 7, 2021
- Last updated
Global Notice Global Historical notice
Severe Acute Respiratory Syndrome (SARS) multi-country outbreak - Update 6
- Start date
- June 7, 2021
- Last updated
Global Notice Global Historical notice
Cholera in Iraq - Update
- Start date
- June 7, 2021
- Last updated
Global Notice Global Historical notice
2002 - Meningococcal disease in the Great Lakes area (Burundi, Rwanda, United Republic of Tanzania) - Update 2
- Start date
- June 7, 2021
- Last updated
Global Notice Global Historical notice
Cholera in Iraq - Update 3
- Start date
- June 7, 2021
- Last updated
Global Notice Global Historical notice
Suspected acute haemorrhagic fever syndrome in the Republic of the Congo - Update 2
- Start date
- June 7, 2021
- Last updated
Global Notice Global Historical notice
Severe Acute Respiratory Syndrome (SARS) - multi-country outbreak - Update 16
- Start date
- June 7, 2021
- Last updated
Global Notice Global Historical notice
2002 - West Nile virus in Canada
- Start date
- June 7, 2021
- Last updated
Global Notice Global Historical notice
Poliomyelitis in Angola
- Start date
- June 7, 2021
- Last updated
Global Notice Global Historical notice
Update 70 - Singapore removed from list of areas with local SARS transmission
- Start date
- June 7, 2021
- Last updated
Global Notice Global Historical notice
2002 - Cholera in Democratic Republic of Congo
- Start date
- June 7, 2021
- Last updated
Global Notice Global Historical notice
Acute respiratory syndrome in China
- Start date
- June 7, 2021
- Last updated
Global Notice Global Historical notice
2002 - West Nile virus in the United States - Update 3
- Country
- United States
- Start date
- June 7, 2021
- Last updated
Global Notice Global Historical notice
Severe Acute Respiratory Syndrome (SARS) - Multi-country outbreak - Update 41
- Start date
- June 7, 2021
- Last updated
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.
