Basics
How does Hantavirus spread?
90-Second Answer
Last updated June 24, 2026
Short answer
Hantavirus usually spreads from infected rodents to people through contaminated urine, droppings, saliva, or nesting materials.
What it means
CDC says infection can happen when fresh rodent waste or nesting material is stirred up and virus particles get into the air. Exposure can also happen if contaminated material gets into broken skin, the eyes, the nose, or the mouth. Rodent bites or scratches are possible but uncommon routes.
What to know
The main risk is environmental exposure to infected rodents or contaminated materials. Most Hantaviruses are not spread casually from person to person.
When to check official guidance
Use CDC cleanup guidance before handling rodent-contaminated spaces. Contact public health officials or a healthcare professional if symptoms follow a possible exposure.
Sources
Hantavirus Now summarizes external public health information in plain language. Source links open in a new tab.