Trader consensus at 98% against a hantavirus pandemic in 2026 reflects the virus's primary rodent-borne transmission via urine, feces, or saliva, with only the Andes strain showing limited human-to-human spread under close, prolonged contact. A contained 2026 outbreak aboard the MV Hondius cruise ship produced 13 confirmed or probable cases and three deaths before ending in July, with no evidence of sustained community transmission afterward, per WHO and CDC monitoring. Endemic activity, such as Chile's 52 cases and 21 fatalities through September, remains geographically limited and consistent with historical patterns. While model uncertainty and potential variant emergence exist, current surveillance data and infection control measures support the market-implied odds, with new case reports or genomic shifts as key upcoming indicators.