Massachusetts reports first human West Nile case in Middlesex County man

Massachusetts reported its first human West Nile virus case of the year Thursday, a man in his 90s from Middlesex County. Officials raised risk levels to moderate in 70 communities across 11 counties. The man was exposed in Middlesex County, though no further details were released. State officials noted 180 positive mosquito samples have been detected since mid-June, prompting the elevated risk warnings. Most infected people show no symptoms, but severe cases can cause encephalitis or meningitis. Since 2001, Massachusetts has reported 273 human infections and 20 deaths. Officials urge using EPA-registered repellents and avoiding outdoor activity from dusk to dawn.