The Department of Public Health announced that laboratory testing confirmed the third human case of the EEE virus infection.
A male in his 90s was exposed in Plymouth County. As a result, the EEE risk level has been raised to critical in Halifax and high in East Bridgewater and Hanson.
Across the Commonwealth, there are now four municipalities at critical risk, nine at high risk, and 18 at moderate risk for EEE.
There have already been two other human cases identified this year. In 2019, there were 12 human cases of EEE in Massachusetts with 6 deaths.
EEE virus has been found in 64 mosquito samples this year, over 70 percent of them in species of mosquitoes capable of spreading the virus to people.