A disturbing health scare is unfolding at sea. The World Health Organization is investigating a cluster of hantavirus cases aboard a cruise ship that has left three passengers dead and four more infected — one in critical condition. The key question under investigation: whether the virus spread from person to person, a mode of transmission considered extremely rare for hantavirus. If confirmed, it could represent a significant and alarming shift in the virus’s epidemiology, with major implications for public health protocols.
Walter Murrow
May 5, 2026
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