ROCKLIN, June 5, 2024 – The Placer Mosquito and Vector Control District have detected invasive Aedes aegypti mosquitoes in the Parker Whitney neighborhood of Rocklin near Johnson-Springview Park. This detection marks the second location where invasive Aedes have been found in 2024. Invasive mosquitoes were found in the Foothills Junction neighborhood of Roseville on Friday, May 31, 2024. The map below identifies the detection area for the Parker Whitney neighborhood.

Aedes aegypti mosquitoes have been spreading throughout California since 2013 and in Placer County since 2019. This mosquito is small with black and white striped legs. Aedes aegypti mosquitoes can transmit several viruses, including Zika, dengue, chikungunya and yellow fever although these diseases are not circulating in Placer County. Last year, two cases of locally transmitted dengue were reported in Long Beach and Pasadena.

Placer Mosquito will follow its invasive mosquito response plan to determine the extent of the infestation. The District needs residents to help by allowing our technicians to access and inspect front and back yards. Residents can help limit mosquito development by removing all standing water from their yards. A treatment is scheduled tomorrow morning, Thursday, June 6, to target larval and adult Aedes mosquitoes in the Foothills Junction and Parker Whitney neighborhoods.

For the most up to date information about invasive Aedes in Placer County, visit

To see planned treatments and to sign up for treatment notifications, visit