The individual lives in Plum Borough, an eastern suburb of Pittsburgh. They are recovering at home, according to the county, and no further details about their identity are expected to be released.

West Nile virus most often causes a mild or moderate flu-like illness, but can be more serious for those over 65 and those with underlying conditions.

An advisory was issued Wednesday after several local sentinel chickens tested positive for West Nile virus. A human infection was reported in Clay County in the week of August 10-16.