Media Releases
Unmistakable Signs of Increased West Nile Virus in Placer County
The Placer Mosquito and Vector Control District reports the highest weekly count of West Nile virus-positive mosquito samples this summer, with 16 additional positive mosquito samples taken from surveillance traps in Sheridan and the agricultural areas west of Roseville this week.
Yellowjackets More Active in Placer County
The Placer Mosquito and Vector Control District reports an increase in calls concerning yellowjacket wasps, especially in the western end of Placer County.
Ground-Based Mosquito Treatment in Response to High Trap Counts in Northwest Roseville
Unusually high mosquito trap counts trigger localized treatment efforts in northwest Roseville.
Mosquito Samples Suggest Increased West Nile Virus Activity in Residential Areas of West Roseville
Mosquito samples in residential areas of west and northwest Roseville are turning up positive for West Nile virus.
West Nile Virus Hotspots in Western Placer County
Seven additional mosquito samples tested positive for the West Nile virus in the rice-growing region of western Placer County.