Flea-Borne Typhus Reemerges, Hospitalizations Climb in L.A.
LA County is contending with a rising outbreak of flea-borne typhus, with about 220 infections reported in 2025 and roughly 90% of patients hospitalized. The illness is spread by fleas carried by animals like rats and opossums and can cause fever, body aches, and rashes two weeks after exposure. Prevention centers on flea control for pets, yard cleanliness, avoiding stray wildlife, and seeking early antibiotic treatment, which is usually effective.