The limited and contained nature of the May 2026 Andes virus cluster aboard the MV Hondius cruise ship drives the 98% market-implied odds against a hantavirus outbreak by June 30. Official CDC and WHO surveillance through early June confirms roughly 11-13 laboratory-verified cases, all tied to ship passengers or crew, with no confirmed U.S. infections despite monitoring of exposed travelers and a 21-day quarantine period ending May 31. Andes virus, the only hantavirus strain known for limited person-to-person spread under prolonged close contact, has shown no evidence of sustained community transmission or escalation beyond the initial exposure window. Historical U.S. hantavirus pulmonary syndrome cases remain sporadic and rodent-linked, with no recent indicators of increased rodent activity or novel strains meeting outbreak thresholds. Any additional cases from the incubation period would likely stay isolated given active public health follow-up.