Mosquitoes test positive for West Nile Virus - spraying set for Aug. 29

The Massachusetts Department of Public Health has confirmed the presence of West Nile Virus in two samples of mosquitoes collected by the Berkshire County Mosquito Control Project in the City of Pittsfield. This is the third confirmed finding in the city for the 2017 summer season.

To reduce the mosquito population and potential for infection, truck-mounted mosquito spray application is scheduled for 10 p.m.-midnight, Tuesday, Aug.29, on roads within a one-mile radius of the Wahconah Street and Pecks Road intersection and within a one mile radius of the Crane Avenue and North Street intersection.

In the event of rain, spraying may be rescheduled for the evening of Wednesday, Aug. 30. 

A map of the scheduled spray area is available on the City of Pittsfield website at

This application will not leave significant residue and is not persistent in the environment. 

West Nile Virus is most commonly spread through the bite of an infected mosquito. The best way to protect yourself and your loved ones from mosquito borne illness is to take the following precautions:

  • When outdoors, wear long pants, a long-sleeved shirt and socks.
  • Use a repellent with DEET according to the instructions on the product label
  • Keep mosquitoes out of your house by repairing holes in screens  and making sure screens fit tightly to doors and windows
  • Schedule outdoor events to avoid the hours between dusk and dawn, when mosquitoes are most active
  • Remove areas of standing water around your home to eliminate sources of mosquito breeding

Although there are no reported human cases of West Nile Virus in Mass. this season, protection is important in late summer. The majority of people who are infected will not have symptoms. However, about 20 percent of infected people will have symptoms such as fever, headache, body aches, nausea, vomiting, swollen lymph glands, skin rash on chest, stomach and back; one percent of infected people will develop severe illness.

Residents may request to be excluded from pesticide application by submitting an Exclusion Request Form which can be obtained at  The form is also available by contacting the Berkshire County Mosquito Control Project at 413-447-9808 or


For more information about mosquito borne viruses call the Pittsfield Health Department at 499-9411 or visit The City of Pittsfield website at or the Massachusetts Department of Public Health website at