Global Notice Global Historical notice
Pandemic (H1N1) 2009 - update 77
- Start date
- June 4, 2021
- Last updated
Data Explorer
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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
Pandemic (H1N1) 2009 - update 65
- Start date
- June 4, 2021
- Last updated
Global Notice Global Historical notice
Pandemic (H1N1) 2009 - update 58
- Start date
- June 4, 2021
- Last updated
Global Notice Global Historical notice
Pandemic (H1N1) 2009 - update 81
- Start date
- June 4, 2021
- Last updated
Global Notice Global Historical notice
Pandemic (H1N1) 2009 - update 85
- Start date
- June 4, 2021
- Last updated
Global Notice Global Historical notice
Pandemic (H1N1) 2009 - update 110
- Start date
- June 4, 2021
- Last updated
Global Notice Global Historical notice
Pandemic (H1N1) 2009 - update 98
- Start date
- June 4, 2021
- Last updated
Global Notice Global Historical notice
Pandemic (H1N1) 2009 - update 95
- Start date
- June 4, 2021
- Last updated
Global Notice Global Historical notice
Pandemic (H1N1) 2009 - update 105
- Start date
- June 4, 2021
- Last updated
Global Notice Global Historical notice
Influenza A(H1N1) - update 53
- Start date
- June 4, 2021
- Last updated
Global Notice Global Historical notice
Pandemic (H1N1) 2009 - update 101
- Start date
- June 4, 2021
- Last updated
Global Notice Global Historical notice
Influenza - update 113
- Start date
- June 4, 2021
- Last updated
Global Notice Global Historical notice
Pandemic (H1N1) 2009 - update 62 (revised 21 August 2009)
- Start date
- June 4, 2021
- Last updated
Global Notice Global Historical notice
Pandemic (H1N1) 2009 - update 78
- Start date
- June 4, 2021
- Last updated
Global Notice Global Historical notice
Pandemic (H1N1) 2009 - update 106
- Start date
- June 4, 2021
- Last updated
Global Notice Global Historical notice
Pandemic (H1N1) 2009 - update 71
- Start date
- June 4, 2021
- Last updated
Global Notice Global Historical notice
Pandemic (H1N1) 2009 - update 102
- Start date
- June 4, 2021
- Last updated
Global Notice Global Historical notice
Pandemic (H1N1) 2009 - update 112
- Start date
- June 4, 2021
- Last updated
Global Notice Global Historical notice
Influenza A(H1N1) - update 32
- Start date
- June 4, 2021
- Last updated
Global Notice Global Historical notice
Meningococcal disease in Sudan
- Start date
- June 4, 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.
