West Nile virus (WNV) detected in mosquitoes in Princeton. West Nile virus (WNV) detected in mosquitoes in Princeton. The New Jersey Department of Health confirmed 2 more human cases of Eastern equine encephalitis (EEE) in the state, identified in Union and Atlantic counties. Suffolk County health officials announced 2 cases of West Nile virus (WNV) in people, the first reported cases of the season.