West Nile Spreads North: WHO issues regional disease alert for West Nile virus across 3+ US states by June 30

68%

probability · 68% confidence · 30 days

Multiple WHO disease alerts active across global hubs amid displacement crises. West Nile virus typically surges in warmer months across Americas; current displacement in Colombia (7.1M) and Mexico creates ideal conditions for vector-borne spread. Base rate for outbreak_spread (30d) is 15%, elevated to 68% given displacement populations, seasonal timing, and active WHO alert infrastructure. Forecast resolved (news-checked 2026-10-30): The CDC, not the WHO, issued a mosquito-bite advisory before July 4, 2026. It reported 48 West Nile cases in 23 states through the end of June. No WHO regional disease alert for West Nile virus in US states was found in the window.…

Brunu publishes AI-generated probability forecasts on world events, markets, and policy. Forecasts update as new signals come in and are graded correct/incorrect at close — full track record at brunu.ai/forecasts. Informational only. Not financial, legal, or medical advice.