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6 min read Weekly News

FOI Clinical - Issue 4

Measles surges to 1,136 cases across 28 states; RSV rising; updates on legionellosis, Hansen's disease, and infant botulism.

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Welcome to the fourth edition of FOI Clinical. Each week, I'll send you a briefing on outbreak news. When something urgent breaks, you'll get an alert the same day.


In this edition

Measles updates - Legionellosis - Hansen's Disease - Infant botulism - Seasonal respiratory pathogens


Measles

Latest epidemiology

As of February 27, 2026, there have been 1,136 confirmed cases, and 28 states have reported cases so far this year. In the first eight weeks of 2026, the cumulative number of reported cases is already half of what was reported across all of 2025.

Updates on Hotspots