This market will resolve to "Yes" if there is a confirmed case of Hantavirus in the territory of the United States of America reported between market creation and May 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No". Any laboratory-confirmed hantavirus infection identified within U.S. territory will qualify, regardless of where exposure or symptom onset occurred. The primary resolution source for this market will be official government information (e.g., the CDC); however, an overwhelming consensus of credible reporting will also suffice.