BOSTON (July 13, 2022) – The Massachusetts Department of Public Health (DPH) today announced that West Nile virus (WNV) has been detected in mosquitoes in Massachusetts for the first time this year.

The presence of WNV was confirmed today by the Massachusetts State Public Health Laboratory in a mosquito sample collected July 11th in the town of Easton in Bristol County.

No human or animal cases of WNV or Eastern equine encephalitis (EEE) have been detected so far this year.  There is no elevated risk level or risk-level change associated with this finding.