Several Americans potentially exposed to a deadly hantavirus on a cruise ship have returned to the United States for monitoring, quarantine, and medical observation. Reporting from multiple outlets says 18 passengers are being monitored in U.S. medical facilities, with most in Nebraska and others in Georgia. CBS News reports that 16 of the passengers are at the University of Nebraska Medical Center in Omaha, while two are being monitored at Emory University in Atlanta. One outlet reports that an American passenger has tested positive for hantavirus. Other coverage describes the quarantine experience for those awaiting updates, including accounts of passengers settling into Nebraska while they wait for decisions on how long they must remain under observation. Separately, CBS News cites the Centers for Disease Control and Prevention as saying that 41 people are being monitored in total in the U.S., including the cruise ship passengers and additional individuals identified through exposure pathways such as prior contact and possible flights to a symptomatic passenger. NPR describes the situation as involving an extended waiting period for quarantine, with some people potentially able to transition to home quarantine if cleared by health authorities.