The University of Nebraska is home to the only federally funded quarantine unit in the U.S. and a separate biocontainment unit that can treat people exposed to infectious diseases. Sixteen of the 18 passengers transferred to the U.S. from a cruise ship where there was an outbreak of hantavirus arrived in Omaha, Neb., on Monday for evaluation after disembarking the vessel in Spain's Canary Islands over the weekend. Of the 15 U.S... [5473 chars]