Yellow fever - Global was recorded by Global Incident Tracker on Wednesday, 24 June 2026 at 15:23 UTC. The event is classified as a epidemic incident with a severity rating of Severe, and was detected through the World Health Organization (WHO).
Yellow fever is a viral disease found in areas of Africa and the Americas, spread by infected mosquitoes. Following an increase of cases in the Americas in 2025, transmission activity remained into 2026. From 1 January to 26 May 2026, six countries reported a total of 79 human infections along with multiple epizootics, indicating active sylvatic circulation. In Africa, sustained activity continued across parts of the region, affecting 13 high-risk countries (as per classification in the Eliminate Yellow fever Epidemics (EYE) Strategy). From January to May 2026, three countries in Africa reported 16 confirmed human cases, with an additional 32 suspected cases under investigation in five other countries. The recent rapid risk assessment assessed geographical variations in vaccination coverage, evidence of viral circulation, and the presence of competent vectors, concluding that unvaccin
Understanding epidemic events
Disease outbreaks including cholera, dengue, measles, Ebola and influenza. Outbreak trajectories depend on transmission route, population immunity and the speed of detection. Early case-finding, clean water and vaccination coverage change outcomes far more than late-stage restrictions.
How severity is rated
Global Incident Tracker rates every event on a four-step scale — Minor, Moderate, Severe and Extreme — derived from the source signal: earthquake magnitude, official GDACS alert colour, or the volume of independent media reporting for news-derived incidents. This event is currently rated Severe. Ratings can change as more information becomes available, and a rating is a monitoring signal rather than an official government assessment.
Safety guidance for epidemic situations
- Follow official case definitions and testing guidance rather than social-media claims.
- Prioritise clean water, hand hygiene and safe food handling during any outbreak.
- Keep routine vaccinations up to date; they carry most of the protective effect.
- Seek care early if you belong to a high-risk group.
- Follow only official instructions from local authorities and emergency services — this page is a monitoring record, not an emergency alert.
Data and verification
This record was generated automatically from the World Health Organization (WHO) and de-duplicated against our archive. Early reports for any incident can be revised: locations get refined, magnitudes are recalculated and impact figures change as assessments arrive. We deliberately do not publish casualty numbers unless an official source states them. The original source report is linked at the top of this page.
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Timeline and sources
Officially recorded
An official record exists from World Health Organization. That confirms the event was recorded; figures quoted from news reports are not confirmed by it.
How statuses are decided · the number of reports is never treated as confirmation.
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· received · event time 24 Jun 2026, 15:23 UTCFirst report Humanitarian agency report
First recorded from World Health Organization.
Times are when this site received each report, in UTC; the event time is shown where the source gave one. Copies of one syndicated story count as one report.