A new study published in *Emerging Infectious Diseases* indicates that hantavirus, the pathogen responsible for a recent outbreak on the MV Hondius cruise ship, may be more widespread among rodents in the Pacific Northwest than previously thought. Conducted in Washington and Idaho, the research found that nearly one in three rodents sampled could be infected with the virus. Specifically, 10% of the rodents tested were actively infected, raising concerns about potential human exposure. The study involved 189 rodents from various habitats, including farms, and revealed that the hantavirus strain present in this region is distinct from the Andes strain associated with the cruise ship outbreak, which primarily affects South America. Hantavirus is transmitted among rodents through saliva and can infect humans when they inhale particles from contaminated droppings or nesting materials. To mitigate risks, researchers advise proper ventilation and wet-cleaning techniques in areas where rodents may be present. Future studies aim to further explore human exposure levels and the relationship between exposure and disease severity.