In this photo illustration Hantavirus samples are seen in Ankara, Turkiye on May 6, 2026. Arman Onal | Anadolu | Getty Images The U.S. Centers for Disease Control and Prevention said there are no hantavirus cases in the country as of Thursday, as it monitors 41 people for the virus. The agency said the risk to the public remains low in the aftermath of an outbreak on a cruise ship.