OMAHA, Nebraska (AP) — The last eight American passengers who endured 42 days in a specialized hospital quarantine unit after exposure to an unusual hantavirus outbreak on a cruise ship that killed three people have left the Nebraska facility. U.S. Department of Health and Human Services officials on Monday confirmed the end of the quarantine . “Through close collaboration among federal, state, and local partners, HHS helped protect the American people, contain potential risks, and bring this