WHO says current evidence suggests subsequent human-to-human transmission aboard MV Hondius, supported by preliminary sequence analysis showing close, near-identical sequences from different cases, and that sentence needs a warning label before it becomes a cruise-ship panic headline across social feeds [1].

The paper's May 18 piece on keeping hantavirus guidance out of cruise gossip argued that exposure categories matter more than dread, and they matter more after WHO's update, not less, because the exception is exactly where loose language does the most damage.

WHO's epidemiology section says human-to-human transmission has only been reported for hantavirus pulmonary syndrome associated with Andes virus infection [1], and it also says the working hypothesis is that the first case acquired the infection before boarding, through land exposure, while investigations continue in collaboration with Argentina and Chile to reconstruct exposure chains [1].

That makes the distinction practical: human transmission is not a rumor to dismiss, but it is also not a license to describe all hantaviruses as casually contagious, so the useful public-health sentence is that Andes virus can spread between people in defined circumstances and contact tracing, isolation, clinical care, exposure histories, and monitoring decide the story.

The warning label should therefore attach to the sentence, not erase it, because readers need to know both that person-to-person spread is plausible here and that the evidence still points to a narrow virus, setting, and exposure chain.

-- NORA WHITFIELD, Chicago