In 1987, between July 6 and September 1, there were 19 cases of encephalitis in West Virginia. Viral encephalitis was the diagnosis in 11 patients, four had only meningitis, and four had meningoencephalitis. All the patients were children, with ages ranging from one to 14 years old, and lived in rural areas in the central part of the state. This region was near a large hardwood forest where the Ae. triseriatus is plentiful. More boys than girls were affected (3.8:1). All but one child was hospitalized (18 children) and there was one death due to cerebral edema.
