West Nile virus has turned up in mosquitos in Erie County.
John Ricci of the Monroe County Health Department says New York officials have confirmed one case of West Nile Virus in a human this year.
According to Ricci, most people are asymptomatic.
"In about 20 percent of the cases people develop what's called West Nile Fever. That's sort of a flu-like syndrome whereby people develop fever, headache, body ache, sometimes swollen glands, but within several days get better even without medical care."
One percent of those who contract the virus will experience extreme symptoms that can include encephalitis.
West Virus can be avoided. Officials recommend wearing long-sleeve clothing, using repellent with DEET, and draining stagnant pools of water.