West Nile Virus Emerges in San Joaquin County

The San Joaquin County Mosquito and Vector Control District has announced the detection of the first West Nile virus-positive mosquito batch of the year. These infected mosquitoes were collected in Upper Jones Tract, an unincorporated area near Stockton. This marks the return of the virus, which has been a recurring presence in the county for over two decades.

As summer temperatures climb, officials anticipate a surge in mosquito populations, escalating the potential for West Nile virus transmission. While most human infections are asymptomatic, some individuals may experience mild to severe illness. To mitigate risks, residents are urged to diligently remove standing water from their properties and utilize EPA-registered mosquito repellents when outdoors.

Last year, San Joaquin County reported numerous positive mosquito pools and dead birds, with seven human cases and one fatality attributed to the virus. Similar cases were noted in neighboring Sacramento County and across the state. To combat the spread, the district emphasizes eliminating even small amounts of standing water, applying appropriate insect repellents, wearing protective clothing, and ensuring screens are properly fitted to homes. Residents can report infestations or dead birds to the district.