Media Releases
Placer County Officials Encourage Mosquito Bite Prevention in Wake of West Nile Cases
Placer County’s public health officer, along with the Placer Mosquito and Vector Control District, are reminding residents to continue to take precautions to avoid mosquito bites, after two recent human cases of neuroinvasive West Nile virus.While West Nile activity typically begins in early summer, it can continue to peak into the fall. “While most people with West Nile may not [...]
Three More Invasive Aedes Mosquitoes Detected in Placer County
ROSEVILLE, Calif., August 4, 2022 – The Placer Mosquito and Vector Control District detected three more invasive (non-native) species of mosquito yesterday Wednesday August 3. Two female and one male Aedes aegypti, commonly known as the yellow fever mosquito, were found in the Thieles Manor and Cresthaven neighborhoods of Roseville. “These detections mean that invasive mosquitoes are potentially more widespread than previously [...]
First Signs Of Increased West Nile Virus Activity In Placer County On Eve Of Holiday
The Placer Mosquito and Vector Control District reported today that a mosquito sample has tested positive for West Nile virus this week. The sample was collected from a site along the county's western border.
St. Louis Encephalitis Virus Found in Placer County Mosquitoes for the First Time
The Placer Mosquito and Vector Control District reported today that a mosquito sample has tested positive for St. Louis encephalitis virus (SLEV). Laboratory staff detected the virus while performing routine testing of mosquito samples.
First Signs of West Nile Virus Activity Found in Mosquitoes in Western Placer
The Placer Mosquito and Vector Control District reported today that a mosquito sample has tested positive for West Nile virus this week. The sample was collected from a site along the county's western border.