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
Flea-Borne Typhus Surges Across LA County with 90% of Cases Requiring Hospitalization Los Angeles County is facing a significant rise in flea-borne typhus infections, with nearly 90% of patients needing hospitalization. The disease, caused by bacteria spread through infected fleas, has become a public health concern as cases surge across the region. Health officials warn that the outbreak is widespread, affecting both pet owners and individuals without animals. According to data from the Los Angeles County Department of Public Health, the number of typhus cases has increased dramatically in recent years. In 2025, 220 infections were recorded in the county, up from 187 cases in 2024. Dr. Aiman Halai, a medical epidemiologist with the department, emphasized that the trend of rising cases has continued year after year, with outbreaks occurring in all areas of the county. "These cases have been rising year after year. They're occurring in all areas of our county," Halai stated. Typhus symptoms, which range from mild to severe, typically include fever, headache, nausea, body aches, vomiting, and a rash. These symptoms can appear one to two weeks after a flea bite. Halai explained that while the disease is not transmitted directly from person to person, it can spread through contact with infected fleas that live on rats, stray cats, and possums. "Infected fleas tend to live on rats, free-roaming cats, and possums," she said. "If your dog or cat spends a lot of time outdoors and gets exposed, they don't have to show any signs of illness for you to get sick." The severity of the illness varies, with some patients developing life-threatening complications. Halai noted that severe cases can involve multiple organ systems and may result in death.#los_angeles_county #santa_monica #los_angeles_county_department_of_public_health #dr_aiman_halai #central_los_angeles
