NEW YORK (CBSNewYork) – New York City health officials have confirmed the summer’s first human cases of West Nile Virus.

Four people tested positive for the mosquito-borne illness.

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Two cases were reported in Queens, one in Brooklyn and one on Staten Island.

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Last year, 36 New Yorkers were diagnosed with the virus.

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The health department says it continues to spray parts of the city where mosquitoes are prevalent.