Media Releases
Placer County confirms first West Nile virus death of season
For Immediate Release ROSEVILLE, Calif., – Public Health officials confirmed the first death of a Placer County resident from West Nile virus this season, a Roseville man. There have been 54 confirmed human cases and 5 West Nile virus-related deaths reported in California this year. There have been five confirmed human cases of West Nile virus in Placer County this [...]
First Human Case of West Nile Virus Reported in Placer County This Summer
ROSEVILLE, Calif., – Placer County’s health officer, along with the Placer Mosquito and Vector Control District, continue to encourage residents to take preventative steps that will reduce their risk of acquiring mosquito-borne illnesses. Since the first 2025 detection of West Nile virus in Placer County in June, the District has detected the virus in 5 dead birds and in 129 [...]
West Nile Virus Positive Mosquitoes Found in West Placer County Agricultural Area
Placer Mosquito urges residents to use EPA-registered repellent to prevent bites UNINCORPORATED PLACER COUNTY, Calif., June 18, 2025 – The Placer Mosquito and Vector Control District has confirmed the first mosquito sample to test positive for West Nile virus in Placer County this year. The mosquitoes were collected in the rural west Placer County area, west of the city of [...]
West Nile Virus Mosquitoes Detected In Sheridan
Placer Mosquito urges residents to protect themselves from mosquito bites with EPA-registered repellent SHERIDAN, Calif., July 11, 2024 – The Placer Mosquito and Vector Control District confirmed the first mosquito sample to test positive for West Nile virus in the county for 2024. The mosquitoes were collected in Sheridan, a rural area in northwest Placer County. The District traps and [...]
Increased Grasshopper Activity in Areas of Placer County
In the past week, West Placer, Roseville and Lincoln, have received an increase in reports of unusual grasshopper activity. The Placer County Agricultural Commissioner in collaboration the UC Urban and Community Integrated Pest Management Area Advisor, the UC Master Gardeners of Placer County, Placer Mosquito and Vector Control District, and the cities of Roseville and Lincoln, worked together to answer [...]