Officials say the first mosquito sample of the season in Sacramento County tested positive for West Nile Virus. The sample was collected south of Tahoe Park.
SACRAMENTO COUNTY, Calif. — The Sacramento-Yolo Mosquito and Vector Control District announced Tuesday that their first mosquito sample of the season tested positive for West Nile Virus.
The infected mosquito sample was collected in an area south of Tahoe Park in the City of Sacramento, according to officials. No activity has been detected in Yolo County.
District Manager Gary Goodman said the detection is an early reminder that mosquito season is already underway.
“This finding is an important reminder that mosquito season is already underway, and much earlier than we typically see,” Goodman said in a statement.
Officials said the district will increase mosquito trapping, monitor potential mosquito breeding grounds in the area and may conduct targeted ground spraying to reduce the adult mosquito population.
The district urged residents to take precautions against mosquito bites, including using insect repellent, draining standing water and repairing damaged door or window screens.
The district also said to report dead birds, neglected pools or related mosquito issues.
In 2025, State health officials reported 124 confirmed human cases of West Nile Virus in California, including 11 deaths.
The Sacramento-Yolo Mosquito and Vector Control District suggests other ways people can practice mosquito prevention:
DRAIN standing water that may produce mosquitoes.
DAWN and DUSK are times to avoid being outdoors.
DRESS appropriately by wearing long sleeves and pants when outside.
DEFEND yourself by using an effective insect repellent. Make sure to follow label directions!
DOOR and window screens should be in good working condition.
DISTRICT personnel are also available to address any mosquito problems.
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