Just last week authorities revealed the causes of death for legendary actor Gene Hackman and his wife, Betsy Arakawa, who were found dead in their home on Feb. 26. Authorities confirmed last week that Hackman died of heart disease with Alzheimer’s disease playing a significant contributing role.

Hantavirus comes from contact with rodents, especially after exposure to their urine, droppings and saliva. Read about how common it is in California.