Eastern Equine Encephalitis (EEE) is rare but is very serious due to the severity of symptoms. Approximately 50% of people who contract the virus die from it and those who survive often suffer permanent neurological problems.
Use EPA approved insect repellents (list can be found here: https://www.epa.gov/
Avoid outdoor activities around dusk and dawn
Wear loose-fitting clothing that will cover exposed skin (thin and tight clothing such as leggings and athletic shirts will not provide full protection)
Repair window/door screens
Empty yard containers of standing water
Link to more information
https://www.mass.gov/info-details/massachusetts-arbovirus-update