A cruise ship has been affected by a hantavirus outbreak, and american passengers from the ship have been taken to a quarantine unit in Nebraska. The unit, which is reportedly the only federal quarantine unit in the US for this purpose, is located in Omaha and is associated with the University of Nebraska Medical Center. Some outlets report that at least one passenger has tested positive for hantavirus, while others note that the passengers will be monitored, but the exact number of passengers and details of their condition are not consistently reported.