The Alameda County Mosquito Abatement District identified an Aedes aegypti specimen in a trap located near the intersection of Stoneridge Drive and Santa Rita Road. This invasive species, characterized by black and white striping, is capable of transmitting viruses including dengue, Zika, and yellow fever.
Officials note that these mosquitoes are aggressive and may bite at any time. They typically deposit eggs in small, artificial water sources such as plant pots, pet dishes, or old tires. As of 2024, six cases of locally acquired dengue fever have been recorded in Southern California.
Residents are urged to eliminate standing water on their property and use repellents containing DEET, picaridin, IR3535, or oil of lemon eucalyptus. Wearing long sleeves and ensuring screens are intact is also recommended. Anyone experiencing daytime bites or symptoms like fever and joint pain after exposure should contact their physician or report the incident to the district.