A hantavirus outbreak on the MV Hondius cruise ship has raised fears of a new pandemic, with 11 cases and 3 deaths reported. The WHO reassures that this is not a COVID-like outbreak. Hantaviruses are primarily rodent-borne, with rare human transmission. Climate change may influence the spread of hantaviruses, as habitat destruction and changing weather patterns affect rodent populations. Experts urge for enhanced surveillance and ecological restoration to mitigate future outbreaks.