Hantavirus Outbreak on Hondius Cruise Ship Traced to Pre-Boarding Infection, Person-to-Person Spread

Genomic and epidemiological studies confirm that the Andes virus outbreak on the Hondius cruise ship (April-May 2026) originated from an infection acquired before boarding, with subsequent person-to-person transmission aboard. The virus did not mutate to become more contagious, suggesting the outbreak was contained to the ship. This is notable as person-to-person transmission of Andes virus is rare, and the findings clarify the outbreak's dynamics.

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