Hantavirus, the disease that caused the death of Betsy Arakawa, actor Gene Hackman’s wife, has claimed the lives of three people in California. Experts weigh in on the deadly virus.

Investigators found dead rodents, a nest, and droppings on the property of Gene Hackman and his wife, Betsy Arakawa, following her death from hantavirus, which is caused by rodent contact.