Officials at the Placer Mosquito and Vector Control District (PMVCD) announce the beginning of tick season.  Results from surveillance activities for Ixodes pacificus, the western black-legged tick, have shown an increase in tick abundance in the foothill areas of Placer … Continue reading →

ROSEVILLE, Calif., August 30, 2012 – 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 … Continue reading →

ROSEVILLE, Calif., August 2, 2012 – 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 … Continue reading →

ROSEVILLE, Calif. July 26, 2012— 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 … Continue reading →

ROSEVILLE, Calif. July 17, 2012— The Placer Mosquito and Vector Control District reports an increase in calls concerning yellowjacket wasps, especially in the western end of Placer County. Summertime is when yellowjackets are expanding their nests, making them more active and … Continue reading →

ROSEVILLE, Calif. July 5, 2012— The Placer Mosquito and Vector control District reports that mosquito samples taken from surveillance traps in Roseville and Loomis in Placer County have tested positive for West Nile virus.  This is the first indicator of increasing … Continue reading →