Los Angeles County health officials released a public health warning on September 24, 2026 after confirming a second wave of flea‑borne typhus cases within the county. The alert follows a resurgence of infections that prompted officials to inform residents of the renewed risk.
Flea‑borne typhus is a bacterial illness transmitted through the bites of infected fleas. Historically, the disease has appeared intermittently across Southern California, surfacing in clusters that prompt local health agencies to monitor and respond. This latest wave marks the second such increase recorded in recent months, leading the county to issue a formal warning to the public.
The health department’s statement emphasized that the warning reflects the observed rise in reported cases and serves to keep the community informed. While the warning does not specify the number of individuals affected, it underscores the pattern of periodic emergence that characterizes flea‑borne typhus in the region. Officials noted that the disease can present with fever, headache, and rash, symptoms that typically develop after a flea bite from an infected host.
Residents of Los Angeles County are being urged to stay alert for these symptoms and to seek medical attention if they suspect exposure. The county’s communication aligns with standard public‑health practice of issuing advisories when disease patterns shift, aiming to reduce further spread through early detection and treatment.
Health officials continue to monitor the situation and will update the public as additional information becomes available. The warning represents a proactive step to address the resurgence and to remind the community of the ongoing presence of flea‑borne typhus in Southern California.