Los Angeles County Flea-Borne Typhus Surge

United States — Los Angeles County, California is experiencing a record surge in flea-borne typhus cases, with 220 infections reported in 2025, the highest number ever documented. This marks a significant increase from previous years, with nearly 90% of infected individuals requiring hospitalization. The disease, caused by the bacterium Rickettsia typhi, is transmitted to humans by infected fleas commonly found on rats, opossums, and stray cats. Muntu Davis, United States — Los Angeles County, California Health Officer, has urged residents to take preventative measures, such as using year-round flea control on pets, avoiding stray animals, and preventing wildlife from nesting near homes. Outbreaks have been investigated in Central Los Angeles, Santa Monica, and Willowbrook. The United States — Centers for Disease Control and Prevention provides information on the disease, which is treatable with antibiotics, especially when diagnosed early.