Welcome to the fifteenth edition of FOI Clinical. Each week, we'll send you a briefing on outbreak news. When something urgent breaks, you'll get an alert the same day.
In this edition
Measles update - Mpox - Mumps: Maryland outbreak - H1N2v: two variant cases - Pertussis: declining from surge - Legionellosis update - Q fever - Leptospirosis update - Cyclosporiasis: seasonal watch - Coccidioidomycosis update
National interest
Measles
CDC has confirmed 1,893 cases as of May 14, with 27 outbreaks across 40 jurisdictions and 93% of cases outbreak-associated. The rate of new cases has slowed considerably since the first quarter of the year, but there are still 20-30 new cases reported weekly.
- Utah: 466 confirmed cases in 2026. Within the last 3 weeks, 29 new cases have been reported.
- Washington: 44 confirmed cases so far this year, including 24 that are linked to an outbreak. Three hospitalizations have been reported.
- Texas: 182 cases as of May 13, mostly in Hudsputh County (136), a subset or which are associated with federal detention centers.
- New York: 11 confirmed cases. 6 in New York City and 5 in the rest of the state.
- Oregon: 23 confirmed cases, with measles detected in wastewater in counties without reported clinical cases.
Mpox
Connecticut confirmed its first clade I mpox case on May 13 in a traveler who recently returned from Western Europe, where clade I is currently spreading. More than 20 clade I cases have been identified nationally since November 2024, all linked to travel or contact with travelers.
The Nationally Notifiable Disease Surveillance System (NNDSS) reports 274 total mpox cases so far this year, 50% more than the same period last year.
The Connecticut Department of Health urged at-risk populations to complete the two-dose JYNNEOS series ahead of summer travel season.