A cluster of hantavirus infections linked to a cruise ship in the Atlantic Ocean has left three people dead and several others seriously ill, prompting an alert from the World Health Organization and raising questions about how a rare rodent-borne disease might spread in such an unusual setting.

CNN's Dr. Sanjay Gupta gives insight on how hantavirus spreads through "close contact."

“Mumbai has a significant rat population in places such as godowns, malls, D-Mart stores, old buildings, hospitals and even public spaces where street-food stalls are set up. We need extensive pest-co...

Two Maryland residents are being monitored for potential hantavirus exposure, according to the Maryland Department of Health.

A passenger on the cruise ship at the center of a deadly hantavirus outbreak is a Santa Clara County resident who has returned home, the County of Santa Clara Public Health Department said Sunday.