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The New York State Department of Health confirmed the first locally acquired chikungunya case in New York, and the first reported in the U.S. since 2019, after Wadsworth Center testing in Nassau County, Long Island. Officials say the patient likely was bitten by an infected mosquito, though the precise exposure source is unknown. The public risk is low; the virus isn't spread person-to-person, and most illnesses resolve within a week. No virus has been found in New York mosquito samples. With colder nighttime temperatures, health leaders urge standard mosquito-bite precautions.

Prepared by Olivia Bennett and reviewed by editorial team.