Media Releases
Mosquitoes in Placer County Test Positive for St. Louis Encephalitis Virus
This is the first time since 2017 that mosquitoes in Placer County have tested positive for SLEV ROSEVILLE, Calif., September 13, 2023 – The Placer Mosquito and Vector Control District detected St. Louis Encephalitis virus (SLEV) in a mosquito sample near the Lincoln Airport. This is only the second time SLEV has ever been detected in a mosquito in Placer [...]
First Human Case of West Nile Virus Reported in Placer County this Summer
Officials urge residents to protect themselves from mosquito bites with an EPA-registered repellent ROSEVILLE, Calif., August 30, 2023 – Placer County’s public health officer, along with the Placer Mosquito and Vector Control District, are urging residents to prevent mosquito bites after the first human case of West Nile virus was reported in Roseville this week. West Nile virus is a potentially serious illness transmitted [...]
First Human Case of West Nile Virus Reported in Placer County This Season
Placer County and the Placer Mosquito and Vector Control District Urge Residents to Protect Themselves from Mosquito Bites ROSEVILLE, Calif., September 10, 2021 – Placer County’s interim health officer, along with the Placer Mosquito and Vector Control District, encourage residents to take precautions to avoid mosquito bites, after a human case of West Nile virus was reported in Roseville today. [...]
First West Nile Virus Positive Mosquitoes of the Season Detected in Westpark
The Placer Mosquito and Vector Control District confirmed the first mosquito sample to test positive for West Nile virus in the county for the 2021 season. The mosquitoes were collected in a mosquito trap in western Placer County near the Westpark neighborhood of Roseville. The District’s vector and disease surveillance program traps and tests mosquitoes weekly throughout the county. The [...]
First West Nile Virus Positive Mosquitoes Detected In Placer County
The Placer Mosquito and Vector Control District has confirmed the first mosquito sample to test positive for West Nile virus in 2020. The mosquitoes were collected in a mosquito trap in western Placer County near Baseline and Pleasant Grove Roads.