Media Releases
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.
West Nile Virus Rears Its Head in Placer County
The Placer Mosquito and Vector control District reports that an American robin collected from the northwest Roseville area has tested positive West Nile virus.
Increased Plague Activity in the Tahoe Area
Due to increased plague activity in the Tahoe Basin area last fall, public health officials advise caution this summer. With the upcoming Memorial Day holiday heralding the unofficial beginning of the season, residents and visitors alike are being asked to be aware of the potential risk of rodent-borne disease.
Tick Season Begins!
Officials at the Placer Mosquito and Vector Control District (PMVCD) announce the beginning of tick season. Results from surveillance activities for Ixodes pacificus, the western black-legged tick, have shown an increase in tick abundance in the foothill areas of Placer County.