Hantavirus outbreaks remain driven by rodent reservoirs and aerosolized exposure to urine, droppings, or saliva, with the Andes virus as the sole strain showing limited human-to-human transmission only under prolonged close contact. Recent 2026 clusters in Argentina (over 100 seasonal cases) and Chile, including the contained MV Hondius cruise ship event with 11–13 cases and three deaths, demonstrate localized zoonotic spillover rather than sustained community spread, consistent with CDC and WHO data showing no pandemic-capable traits. Official alerts emphasize prevention and surveillance without epidemic declarations. While model projections or unexpected viral adaptation could theoretically alter dynamics, current epidemiological patterns and absence of efficient airborne or casual transmission underpin the 98.7% market-implied probability against a 2026 pandemic.