Health officials are urging residents to take precautions after flea-borne typhus cases increased in Los Angeles County.
Flea-borne typhus is caused by the bacteria Rickettsia typhi and is transmitted through infected fleas, which are commonly found on rats, opossums and free-roaming cats. Pets such as dogs and cats that go outdoors can bring fleas into and around homes. Infected animals typically do not show signs of illness.
People can become infected when flea feces are rubbed into cuts or scrapes on the skin or come into contact with the eyes. The illness is not spread from person to person, according to Public Health officials.
Symptoms include fever, chills and rash. Health officials advise seeking medical attention right away if symptoms develop.
Public Health investigated a local outbreak of flea-borne typhus in central Los Angeles and is currently investigating a second outbreak in Santa Monica.
Flea-borne typhus cases have been steadily rising in the county since 2010. In 2024, a record 187 cases were identified. So far this year, 106 cases have been reported. Public Health officials expect to see more cases and clusters, as infections typically peak in late summer and fall.
“This ongoing increase in flea-borne typhus highlights the importance of taking preventive steps to reduce the risk of infection,” Dr. Muntu Davis, the county’s health officer, said in a statement.
Public Health recommends steps to reduce risk, including using flea control products on pets, avoiding stray animals, storing trash in sealed containers and keeping yards clear of debris.
Residents should also use EPA-registered insect repellents and report any stray animals or signs of rodents to their local animal control agency.
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