By Lookout Staff

September 2, 2025 -- LA County Public Health officials are investigating an outbreak of flea-borne typhus cases in Santa Monica following an increase in reported cases countywide since 2010.

Health officials on Thursday urged residents to protect themselves and their pets against the illness, since infections, which are not spread from person to person, are expected to peak in late summer and fall.

An acute febrile illness, typhus is spread by infected fleas most commonly found on rats, free-roaming cats and opossums, according to health officials.

"Pets such as dogs and cats that go outdoors can bring fleas into and around your home," officials said. "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 rubbed into the eyes."

A record 187 cases were identified in LA County last year, with 106 cases already reported as the peak season kicks in.

“This ongoing increase in flea-borne typhus highlights the importance of taking preventive steps to reduce the risk of infection,” said LA County Health Officer Dr. Muntu Davis.

To prevent the risk of infection, Public Health urges 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."

Those who develop symptoms, such as fever, chills, or a rash, should immediately seek medical attention, Health officials said.