Logo courtesy of Solano County

SOLANO COUNTY, CA (MPG) – The Solano County Department of Health and Social Services, Public Health Division, in coordination with the Solano County Mosquito Abatement District, has confirmed the first detection of an Aedes aegypti mosquito in Solano County in 2026. The mosquito was collected in Vacaville on July 24. This invasive mosquito species was first identified in Solano County in Dixon in 2023.

“Aedes aegypti is a more aggressive mosquito that can carry serious diseases like yellow fever,” said Dr. Cameron Kaiser, Solano County acting public health officer. “While the ones we've found locally have so far been negative for this and other illnesses, take steps today to protect yourself and prevent mosquitoes from breeding where you live.”

The Aedes aegypti mosquito is not native to California and typically lives in tropical, subtropical and in some temperate climates. This mosquito can spread diseases such as Zika, yellow fever, dengue, chikungunya and other viruses. They are small, dark mosquitoes with white markings and banded legs. Because these mosquitoes live near and prefer to feed on people, they are more likely to spread these viruses than other types of mosquitoes. The mosquito is most active during the day, and it often bites indoors, but it is also active around dusk and dawn.

“We plan to do everything possible to eliminate this invasive mosquito in order to protect residents from the potential risks that come with it,” said Bret Barner, Solano County mosquito abatement district biologist. “We will continue surveillance throughout the area.”

Steps to Help Reduce Risk

Early detection provides the best chance of eliminating the Aedes aegypti mosquito. Residents should eliminate all sources of standing water on their property to control the species, including turning over flowerpots, eliminating spare tires, treating swimming pools and drainage ditches, which are common breeding sources of the Aedes aegypti mosquito.

For additional tips, visit SolanoMosquito.com/Prevention. Any unmaintained swimming pools and stagnant water should be reported by calling the Solano County Mosquito Abatement District at 707-437-1116.