Mosquitoes in Mecca, California, have tested positive for the St. Louis Encephalitis Virus (SLEV), marking the first detection of the virus in this community for 2025. The sample was collected near Hayes Street and 66th Avenue. General Manager Jeremy Wittie commented on the situation: “St. Louis Encephalitis virus is endemic, which means we'll detect it every year in our communities.'' He advised residents to inspect and remove stagnant water around their homes weekly as mosquito activity increases with warmer weather.
No human cases of SLEV have been reported this year in either the Coachella Valley or across California. As there is no vaccine available for humans, it is important for residents to protect themselves from mosquito bites by using insect repellent.
The Coachella Valley Mosquito and Vector Control District plans to increase mosquito control efforts in the affected area to reduce mosquito populations and prevent further transmission of SLEV.
To prevent mosquito bites, individuals are advised to stay indoors during dawn and dusk when mosquitoes are most active, use EPA-registered insect repellents like DEET or picaridin, wear long sleeves and pants, and ensure window and door screens are intact.
Residents can also reduce mosquito breeding grounds by regularly cleaning lawn drains, draining standing water from containers like potted plants or birdbaths, maintaining pet dishes and water features weekly, and ensuring swimming pools and fountains have working pumps.
SLEV spreads when mosquitoes bite infected birds; these mosquitoes can then transmit the virus to humans. While most people show no symptoms if infected, some may experience fever, headaches, or body aches. Severe cases might require hospitalization.