The New York City Health Department reported the first West Nile Virus case of the 2013 season on Friday.
Two Staten Island residents have been diagnosed, the Health Department reported, though one of them may have contracted the virus in another state.
Both are hospitalized and being treated for encephalitis, a swelling of the brain due to infection.
The health department is advising New Yorkers, especially those over age 60, to take extra precautions against mosquito bites.
They recommend not allowing standing water to collect near or around homes, wearing mosquito repellent outdoors, and wearing long sleeves and pants in the early morning and evening hours, when mosquitos are most active.
Neighborhoods in Staten Island will be sprayed for West Nile Virus on Wednesday, the health department reported. Neighborhoods in Queens have already been sprayed several times this season.
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