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 [...]
West Nile Virus Positive Mosquitoes and Dead Bird Detected in West Roseville
Placer Mosquito urges residents to protect themselves from mosquito bites with an EPA-registered repellent ROSEVILLE, Calif., June 21, 2023 – The Placer Mosquito and Vector Control District confirmed the first mosquito sample and dead bird to test positive for West Nile virus in the county for 2023. The mosquitoes and dead bird were collected in western Placer County near the [...]
Invasive Aedes Aegypti Mosquito Found in Roseville
ROSEVILLE, JUNE 13, 2023 - The Placer Mosquito and Vector Control District detected an invasive Aedes aegypti mosquito in Roseville today. The Aedes aegypti mosquito, commonly known as the yellow fever mosquito, was found in the Cherry Glen neighborhood of Roseville. Aedes aegypti mosquitoes have been spreading throughout California since 2013. This mosquito is small with black and white striped legs [...]
Record Amounts of Rainfall Create Perfect Conditions for Mosquitoes
Mosquito Awareness Week, observed April 16 - 22, 2023, educates California residents about mosquitoes and how to help prevent the spread of mosquito-transmitted diseases SACRAMENTO, APRIL 12, 2023 -- One of the wettest years in history has left standing water across the state, creating perfect conditions for mosquitoes to develop. Stagnant water creates havens for disease-spreading mosquitoes, and mosquito experts [...]