GRAFTON, Mass. - Grafton, Northborough and Southborough raised their Eastern Equine Encephalitis threat level to "Moderate" on Thursday following the second detection of the virus in Westborough.
Shrewsbury's level is already at "Moderate."
The Massachusetts Department of Public Health announced the detection of mammal-biting mosquitoes infected with Eastern Equine Encephalitis again in Westborough on Thursday. The department raised that town's threat level to "High" and recommended curtailing outdoor activities during the hours when mosquitoes are most active.
The first detection of EEE in Westborough occurred in late July.
State Epidemiologist Dr. Al DeMaria said it's important for people to use insect repellent, to cover exposed skin and avoid outdoor activities at dusk and nighttime when the inspects are most active. The state offered other tips to stay protected against EEE.
EEE is a serious disease for all ages and can cause death. There has been one human case of EEE in the state, but it is believed that it was contracted out of state.