Study Reveals Widespread Presence of Deadly Hantavirus in Pacific Northwest Rodents
A recent study conducted by researchers at Washington State University has uncovered that the Sin Nombre virus, a hantavirus causing severe respiratory illness in humans, is more prevalent in rodent populations in the Pacific Northwest than previously thought. The study, published in the CDC's Emerging Infectious Diseases journal, focused on the Palouse region of Washington and Idaho. It found that nearly 30% of rodents tested had past infections, and about 10% were actively carrying the virus. The Sin Nombre virus, primarily found in deer mice, can spread to humans through inhalation of airborne particles from contaminated rodent droppings, urine, or nesting materials. The study's findings highlight the complexity and widespread nature of the virus in local rodent populations, with researchers noting the high genetic diversity and potential for viral reassortment. Despite the prevalence in rodents, human infections remain rare, though the study suggests that some cases may go unnoticed. 
