Maritime First: Andes Hantavirus Documented in Person-to-Person Transmission Aboard Antarctic Cruise

A cluster of 15 Andes hantavirus infections aboard an Antarctic expedition cruise has marked a significant epidemiological milestone—the first documented outbreak of this South American pathogen in a maritime setting with confirmed person-to-person transmission. The cases emerged during a 14-day voyage with 300 passengers and crew, with genomic sequencing confirming the viral strain originated from endemic regions in southern Chile and Argentina. Three deaths were recorded, reflecting a 20% case fatality rate among confirmed patients. Dr. Maria Rodriguez, an infectious disease specialist at Universidad de Chile, emphasized that this outbreak demonstrates the potential for rare zoonotic diseases to spread rapidly in confined travel environments. Symptoms including fever, myalgia, and respiratory distress typically appeared between days 7-12 of the cruise, consistent with the virus’s 2-5 week incubation period. Chilean health authorities and the World Health Organization coordinated immediate isolation protocols and comprehensive contact tracing efforts. Read the full article on GMJ Newsroom.