Media Releases
Increased WNV Activity and Human Cases in Placer Elevate Importance of Personal Protection
The number of West Nile virus-positive birds in Placer County this year is triple that of last year, positive mosquito samples have more than doubled, and the season isn’t even over yet, reports the Placer Mosquito and Vector Control District.
Placer County Sees Highest Level of WNV Activity This Season
Twenty-two additional mosquito samples in Placer County have tested positive for West Nile virus (WNV) in the past week, all occurring on the western side of the county, from Sheridan in the north, down to the southern border of Roseville.
Traps Still Indicate Elevated Mosquito Populations
In spite of the recent cooler weather, mosquitoes are still out in full force, according to the Placer Mosquito and Vector Control District.
Ground-Based Mosquito Treatment in Small Area of Roseville
Unusually high mosquito trap counts trigger localized treatment efforts in northwest Roseville.
Tests Show West Nile Virus Still a Threat in Placer County
Four additional mosquito samples tested positive for the West Nile virus in the rice-growing region of Placer County, with two samples collected east of Sheridan and Lincoln.