The Massachusetts Department of Public Health has found mosquitoes carrying West Nile virus in Plymouth County.
Health officials confirmed yesterday that the mosquito sample was collected June 30 in Halifax.
It’s the first time this season that the virus has been detected in Massachusetts. So far there have been no human cases this year.
West Nile virus was first reported in the United States in 1999. It is spread by mosquitoes that often pick up the virus from birds they bite. Symptoms include neck stiffness, disorientation, coma and paralysis.