Four towns in central Massachusetts are advising residents to stay indoors at night to avoid contracting a rare but potentially deadly mosquito-borne virus. State officials didn’t report how the current patient, a man in his 80s in Worcester County, was exposed to the virus or the details of his current condition. The disease, described by the public health department as “rare but serious,” is caused by a virus transmitted through mosquito bites.

Symptomstypically appear 5 to 10 days after being bitten by an infected mosquito and include high fever, stiff neck, headache, and fatigue. There are no vaccines to prevent or medicines to treat EEE. In 2019, twelve Massachusetts residents contracted EEE, resulting in six deaths.

“EEE is a rare but serious disease and a public health concern,” said Massachusetts’ public health chief Dr. Robbie Goldstein. “We want to remind residents of the need to protect themselves from mosquito bites, especially in areas of the state where we are seeing EEE activity.

” Specifically, they advise finishing outdoor activities before 6 p.m. through September and 5 p.

m. thereafter until the first hard frost. While outside, residents are recommended to use a repellent and wear clothing that reduces skin exposure, like long sleeves and socks.

At home, residents are recommended to drain or discard items that collect water, such as buckets, tires, flowerpots, and birdbaths, to prevent mosquitoes from breeding in standing water. They are also .