Hantavirus spreads through the urine, droppings, or saliva of wild rodents and can cause severe disease in humans.

Resources:

https://www.cdc.gov/hantavirus/about/index.html

https://www.cdph.ca.gov/Programs/CID/DCDC/pages/hantaviruspulmonarysyndrome.aspx

https://www.cdc.gov/hantavirus/hcp/clinical-overview/index.html