Is hantavirus airborne?

Hantavirus is not airborne in the way COVID-19 or measles are. It is transmitted through aerosols generated when dried rodent excreta (urine, droppings, saliva) become disturbed and suspended in the air locally — for example when sweeping a rodent-infested cabin or vacuuming dry droppings. This means the 'airborne' fraction of transmission is short-range and tied to specific environmental conditions, not breathable in shared rooms over time the way respiratory pathogens are. The Andes virus exception involves close prolonged contact between humans, also not classical respiratory airborne transmission. Standard ventilation (open windows for 30+ minutes before entering a closed cabin) effectively reduces risk.