Welcome to the fifth 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 - H5N1 - Mumps - Seasonal respiratory viruses - Viral hemorrhagic fever
Measles
Latest epidemiology
As of March 5, 2026, there have been 1,281 confirmed cases, up 145 from the week prior. 31 states have reported cases so far this year. The largest case totals have been reported in South Carolina, Utah, Florida, and Texas.
Updates on Hotspots
Several notable outbreaks are underway. The list below is not comprehensive, but rather a selection of prominent active clusters worth keeping in mind.