U.S. health authorities are monitoring dozens of American passengers who returned from the Dutch cruise ship MV Hondius after an outbreak of Andes hantavirus, which caused at least three deaths and eight confirmed cases during a voyage from Argentina. Passengers disembarked in Tenerife on May 11, with repatriation to the United States completed shortly thereafter. The Centers for Disease Control and Prevention has activated its Emergency Operations Center at Level 3 and is tracking passengers in multiple states, including a group at a specialized Nebraska facility. The CDC is urging, but not requiring, home isolation for 42 days, the virus’s incubation period.

Prepared by Olivia Bennett and reviewed by editorial team.