Mosquito samples hit season high for West Nile

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Eight new mosquito samples tested positive for West Nile virus this week along the western Placer County border. This is the highest number of positive samples in one week since the beginning of the 2011 mosquito season, according to a statement released Friday by the Placer Mosquito and Vector Control District. The positive mosquito samples came from several mosquito traps spanning from Sheridan to the Elverta area just west of Roseville, according to the statement. The Placer Mosquito and Vector Control District stated it is gearing up for a large-scale response to these results, with mosquito treatments in the rural areas beginning early next week. “We are still working out the details on how we will be conducting treatments across this large area, as well as increasing surveillance,” said Joel Buettner, General Manager of the District, in a statement. According to Buettner, some localized treatments in residential areas of western Placer County were conducted early Friday morning. So far this season, one bird and 13 mosquito samples have tested positive for West Nile. The virus has yet to be discovered in sentinel chickens or humans in Placer County. ~ Toby Lewis