Americans who were exposed to hantavirus on a Dutch cruise ship arrived at Omaha's Eppley Airfield early Monday morning.
15 were taken to the National Quarantine Unit on the Nebraska Medicine campus.
One person had a positive test and was taken to the Nebraska Biocontainment Unit on the midtown campus, which is separate from the quarantine unit.
None of the people have symptoms.
The evaluations are part of a six-week monitoring period.
(Pictures from Nebraska Medicine/UNMC)