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 a...