Media Releases
Significant Spike in West Nile Virus Activity in Placer County
Fourteen additional mosquito samples in Placer County have tested positive for West Nile virus (WNV) today, bringing the count to 26 WNV-positive mosquito samples in the county for the year.
First Signs of West Nile Virus in Placer – Aerial Treatment Scheduled Tonight for High Risk Areas
The Placer Mosquito and Vector Control District reported today that six mosquito samples and one dead bird have tested positive for West Nile virus this week.
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.
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.





