Global Notice Global Historical notice
Circulating vaccine-derived poliovirus type 1– Lao People’s Democratic Republic
- Start date
- January 29, 2016
- 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
Zika virus disease – United States of America
- Country
- United States
- Start date
- January 29, 2016
- Last updated
Global Notice Global Historical notice
Middle East respiratory syndrome coronavirus – Thailand
- Start date
- January 29, 2016
- Last updated
Global Notice Global Historical notice
Zika virus disease – Dominican Republic
- Start date
- January 27, 2016
- Last updated
Global Notice Global Historical notice
Lassa fever – Nigeria
- Start date
- January 27, 2016
- Last updated
Global Notice Global Historical notice
Influenza A H5N6 virus – China
- Start date
- January 26, 2016
- Last updated
Global Notice Global Historical notice
Middle East respiratory syndrome coronavirus – United Arab Emirates
- Start date
- January 26, 2016
- Last updated
Global Notice Global Historical notice
Middle East respiratory syndrome coronavirus – Saudi Arabia
- Start date
- January 26, 2016
- Last updated
Global Notice Global Historical notice
Guillain-Barré syndrome – El Salvador
- Start date
- January 21, 2016
- Last updated
Global Notice Global Historical notice
Zika virus disease – France
- Start date
- January 21, 2016
- Last updated
Global Notice Global Historical notice
Zika virus disease – Haiti
- Start date
- January 21, 2016
- Last updated
Global Notice Global Historical notice
Zika virus disease – Bolivia
- Start date
- January 20, 2016
- Last updated
Global Notice Global Historical notice
Zika virus disease – Guyana, Barbados and Ecuador
- Start date
- January 20, 2016
- Last updated
Global Notice Global Historical notice
Influenza A H7N9 virus – China
- Start date
- January 19, 2016
- Last updated
Global Notice Global Historical notice
Influenza A H5N6 virus – China
- Start date
- January 11, 2016
- Last updated
Global Notice Global Historical notice
Microcephaly – Brazil
- Start date
- January 8, 2016
- Last updated
Global Notice Global Historical notice
Zika virus disease – United States of America
- Country
- United States
- Start date
- January 8, 2016
- Last updated
Global Notice Global Historical notice
Zika virus disease – France
- Start date
- January 8, 2016
- Last updated
Global Notice Global Historical notice
Middle East respiratory syndrome coronavirus – Oman
- Start date
- January 7, 2016
- Last updated
Global Notice Global Historical notice
Middle East respiratory syndrome coronavirus – Saudi Arabia
- Start date
- January 4, 2016
- 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.
