The contained 2026 Andes virus cluster aboard the MV Hondius cruise ship, which produced roughly 13 cases and three deaths before quarantine and contact tracing ended in June with no sustained transmission, underpins the 97.5% market-implied probability against a hantavirus pandemic this year. Official CDC, WHO, and Argentine health data show the outbreak originated from rodent spillover in South America and remained limited to close-contact spread on the vessel; monitoring of hundreds of international contacts yielded zero additional U.S. or community cases. Endemic seasonal incidence in Argentina (102 confirmed cases through mid-2026) aligns with historical baselines rather than exponential growth. While the Andes strain is the only hantavirus documented to transmit person-to-person, its requirements for prolonged exposure and the absence of new clusters since June support strong trader consensus. A realistic shift would require either a novel variant enabling efficient airborne spread or undetected amplification in remote regions, both of which lack supporting surveillance signals as of September.