Passengers face quarantine after deadly virus outbreak at sea.
Eighty-eight passengers embarked on a 35-day Atlantic expedition.
CDC personnel will quarantine American passengers on flights to Nebraska.
Three Britons linked to the cruise have suspected hantavirus cases.
Experts warn of risks amid misinformation surrounding hantavirus spread.
Health officials predict a low chance of wide-scale pandemic.
Discover more about this evolving health crisis.