The first documented maritime outbreak of Andes hantavirus offers critical lessons for travel health management. The outbreak resulted in 15 confirmed cases among 300 passengers and crew aboard an Antarctic expedition cruise, with three deaths and enhanced transmission dynamics previously unseen in maritime environments. Key takeaways for healthcare providers and travelers include the need for heightened awareness among individuals with recent South American travel history, particularly from endemic regions in Chile and Argentina. Genomic sequencing confirmed the viral origin in southern South America, prompting discussions about enhanced screening protocols for travelers returning from affected areas. The outbreak’s timeline—with symptom onset between cruise days 7-12—demonstrates the importance of pre-travel health assessments and post-travel symptom monitoring. Healthcare systems should consider implementing updated hantavirus surveillance protocols for cruise ship medical teams and port facilities. Contact tracing conducted by Chilean health authorities and international maritime organizations underscores the necessity of coordinated global response frameworks. Read the full article on GMJ Newsroom.
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