Flea-Borne Typhus Cases Surge in Los Angeles County, Prompting Health Warnings Los Angeles County health officials are reporting a significant increase in cases of flea-borne typhus, with the city experiencing its highest number of infections ever recorded. At least 220 cases were identified in 2025, marking an 187-case rise compared to 2024. Nearly 90% of those infected required hospitalization, according to the Los Angeles County Department of Public Health. The bacterial illness, transmitted through contact with infected fleas or their feces, has prompted urgent public health advisories to residents and pet owners. Flea-borne typhus is spread when humans come into contact with fleas that have bitten infected animals such as rats, cats, or opossums. The Centers for Disease Control and Prevention (CDC) notes that symptoms typically develop between one and 14 days after exposure. Common signs include fever, chills, muscle aches, and a rash, though severe cases can lead to complications such as coughing, digestive issues, confusion, and even organ failure. In extreme instances, the disease can be fatal if left untreated. Dr. Aiman Halai, a Medical Epidemiologist at Public Health L.A. County, emphasized the growing threat of the disease. “These cases have been rising year after year. They’re occurring in all areas of our county,” she told ABC7. Halai warned that some patients may develop severe illnesses involving multiple organ systems, with a risk of death in rare cases. She also highlighted that pets can unknowingly carry infected fleas, even if they appear healthy. Pet owners are at risk if flea feces enter the body through open wounds, eyes, or mucous membranes.#los_angeles_county #cdc #centers_for_disease_control_and_prevention #dr_aiman_halai #public_health_la_county
