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San Diego County’s Vector Control Program is scheduled to conduct its first routine aerial larvicide drop of the year on March 24 on 50 local waterways to help stop mosquito breeding in hard-to-reach areas.
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A deer mouse collected in routine monitoring in Cuyamaca Rancho State Park has tested positive for the potentially deadly hantavirus, prompting County officials to remind people to be careful not to come in contact with wild rodents.
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Mosquitoes collected recently in routine monitoring in the City Heights and Skyline neighborhoods of San Diego have tested positive for West Nile virus, prompting County officials to remind people to use the County’s “Prevent, Protect, Report” guidelines to keep mosquitoes from breeding and to protect themselves from mosquito-borne illnesses.
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Hundreds of people attended an outdoor open house hosted by County Vector Control Tuesday, held to educate the public about the importance of controlling vectors like mosquitoes that can transmit harmful diseases.
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County public health officials are looking for people who may have come in contact with a bat found on a sidewalk in Oceanside, on Westport Dr. between Point Sur and Marina Del Rey Ave. on July 18, 2025 that later tested positive for rabies.
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Want to learn more about protecting yourself from mosquito-borne illness? County Vector Control is holding an open house to tell you how to do that, from 10 a.m. until 2 p.m. on Tuesday, July 22, at the County Operations Center plaza, located at 5520 Overland Drive in San Diego.
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The County plans to expand and extend ultra-low volume, truck-mounted, pesticide-mist treatments between 1 a.m. and 6 a.m. Monday and Tuesday mornings in parts of La Mesa to reduce mosquito populations and protect the public from the potential spread of West Nile virus.
