**The primary driver of the 96.9% market-implied probability against a hantavirus pandemic in 2026 is the rapid containment of the only notable 2026 event—an Andes virus cluster aboard the MV Hondius cruise ship.** That outbreak produced roughly 13 cases and three deaths among passengers and crew, with person-to-person spread limited to prolonged close contact, the sole documented transmission mode for this South American hantavirus strain. Official CDC and WHO monitoring of hundreds of contacts across dozens of countries concluded by late June 2026 with no secondary cases or sustained community transmission detected in the United States or elsewhere. Broader hantavirus biology reinforces this outcome: most strains are rodent-borne zoonoses without efficient human-to-human spread, and no evidence of a more transmissible variant or large-scale spillover has emerged since the ship event. While a novel mutation enabling wider aerosol or casual contact transmission remains theoretically possible, current surveillance data and the absence of ongoing clusters make such a shift improbable before year-end.