The U.S. Centers for Disease Control and Prevention announced Wednesday it has officially wound down its response to a hantavirus outbreak.

Quarantine has ended for the 18 Americans who were cruise ship passengers on the MV Hondius and were exposed to hantavirus more than one month ago.

The US Department of Health and Human Services has announced the end of the monitoring period for the virus.

The U.S. Centers for Disease Control and Prevention announced Wednesday it has officially wound down its response to a hantavirus outbreak.