State Public Health Officials Announce Season's Fourth Human Case of EEE in the Commonwealth

The Massachusetts Department of Public Health announced that lab testing confirmed the season’s fourth human case of the EEE virus. 


The latest victim is a female in her 60’s who was exposed in Plymouth County. The risk level there has been raised to high. 


Across the Commonwealth, there are now four municipalities at critical risk, 10 at high risk, and 18 at moderate risk for EEE.


The D-P-H said that mosquito populations are declining and most virus transmission occurs in humans before mid-September. However, there is still some risk until the first hard frost of the year. 


DPH continues to work with the local health departments and the Massachusetts Department of Agricultural Resources to coordinate mosquito surveillance and appropriate public health response activities.


There have been three 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 65 mosquito samples this year, over 70 percent of them in species of mosquitoes capable of spreading the virus to people.