Credit: Shutterstock First Local Detection of Hantavirus in 2025
Jan. 13, 2025 | 10:17 AMReading Time: 2 minutes
A deer mouse collected on Jan. 3, 2025, in Cuyamaca Rancho State Park, has tested positive for the potentially deadly hantavirus.
Tag: vector control
Credit: Shutterstock 
County Reports First Locally Acquired Dengue Case
Oct. 6, 2024 | 8:57 AMReading Time: 3 minutes
The County is investigating the first ever case of locally acquired dengue. The Escondido resident who became sick with dengue did not travel to an area where the mosquito transmitted illness is common. No additional locally acquired cases have been identified at this time.
Credit: Shutterstock Hantavirus Found in Mice at San Onofre State Campground
Sep. 16, 2024 | 12:07 PMReading Time: 2 minutes
Two mice collected from a campground trail at San Onofre State Beach as part of ongoing surveillance to protect public health have tested positive for the potentially deadly hantavirus. County Vector Control team is working with campground officials to notify campground visitors and staff.
Credit: CDC County to Hand Spray for Mosquitoes in Oceanside Area
Sep. 9, 2024 | 3:15 PMReading Time: 3 minutes
County Vector Control crews plan to hand-spray for mosquitoes at approximately 60 homes and a community center in Oceanside to protect public health and keep mosquitoes from potentially spreading the dengue virus based on a confirmed dengue case.
County to Hand Spray for Mosquitoes in Mt. Hope Area
Jul. 24, 2024 | 2:19 PMReading Time: 3 minutes
County Vector Control crews plan to hand-spray a neighborhood in the Mt. Hope area this week to keep mosquitoes from potentially spreading the dengue virus after mosquitoes were found near a person who contracted dengue outside the U.S.
County Takes to the Sky, Again, to Fight Mosquitoes
Jun. 17, 2024 | 10:32 AMReading Time: 2 minutes
San Diego County’s Vector Control Program is scheduled to conduct a routine mosquito-fighting, aerial larvicide drop on June 26 and 27 on around 50 rivers, streams, ponds, and other waterways in the county to kill mosquito larvae.
Proactive Efforts Help as Mosquito Season Kicks Off!
May 31, 2024 | 2:46 PMReading Time: 2 minutes
In April, San Diego County began ramping up its proactive treatment of mosquito breeding sites in waterways around the county. The goal is to reduce these pests and their risk for spreading diseases, such as West Nile virus.