The Los Angeles County Department of Public Health is urging people to take precautions following an increase of flea-borne typhus cases across the County. Earlier this year, Public Health investigated a localized outbreak of flea-borne typhus in Central Los Angeles and is currently investigating a second outbreak in the City of Santa Monica.
“This ongoing increase in flea-borne typhus highlights the importance of taking preventive steps to reduce the risk of infection,” said Dr. Muntu Davis, Los Angeles County Health Officer.
Flea-borne typhus cases have been rising in Los Angeles County since 2010. In 2024, a record 187 cases were identified. So far in 2025, 106 cases have already been reported, higher than this time last year.
In Los Angeles County, infected fleas are most commonly found on rats, free-roaming cats, and opossums. Pets such as dogs and cats that go outdoors can bring fleas into and around your home.
Infected animals typically do not show signs of illness. Flea-borne typhus is not spread from person to person.
“Flea-borne typhus is serious, but preventable,” said Dr. Davis. “We urge people to take precautions by using flea control on their pets, avoiding contact with stray animals, and preventing wildlife from living in or next to their home or property. If you develop symptoms, such as fever, chills, or a rash, seek medical attention right away.”
Health expects additional cases and clusters to appear in the coming months, as flea-borne typhus infections peak in late summer and fall.
For more information regarding flea-borne typhus, visit: ph.lacounty.gov/Typhus
Los Angeles County Public Health
Photo credit; LA Times