The local health board is closing recreation areas at dusk due to safety concerns triggered by disease-carrying mosquitoes. An Aug. 24 announcement by the state Department of Public Health upgraded Plympton to its highest alert status, “critical,’’ which means the area is extremely likely to see multiple cases of human disease. This heightened alarm was triggered after Eastern equine encephalitis, a potentially deadly mosquito-borne virus, was confirmed in an alpaca stabled in Halifax. One person has contracted EEE and three people have come down with West Nile virus in Massachusetts so far this year, according to state health officials.
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