An American national on a repatriation flight has tested positive for hantavirus while another has mild symptoms after leaving a cruise ship hit by a deadly outbreak of the virus, the US health department has said. Both passengers who arrived back in the US on the government charter plane travelled in "biocontainment units out of an abundance of caution", the statement said. All 17 US citizens on the flight will now be further screened at a medical facility in Nebraska. They are among more than