West Nile Virus Confirmed in Mosquitoes from Ayer

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September 21, 2017

The Massachusetts Department of Public Health (MDPH) announced today that West Nile virus (WNV) has been detected in mosquitoes collected from Ayer, Massachusetts. In 2016, 6,414 mosquito samples were tested for WNV and 189 samples were positive. Ayer had no WNV positive mosquito samples identified in 2016.

WNV is most commonly transmitted to humans by the bite of an infected mosquito. The mosquitoes that carry this virus are common throughout the state, and are found in urban as well as more rural areas. While WNV can infect people of all ages, people over the age of 50 are at higher risk for severe infection. 

The affected area will be sprayed tonight - Map

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