41 people under monitoring across US for hantavirus

World Health Organization says its control measures to contain the Hanta virus are working. The agency's operation to transfer all passengers on board the cruise ship is now complete. It comes as at least 41 americans are being monitored for the virus here in the United States. A. B. C. S. Perry Russum has the latest. The World Health Organization says the delicate operation to transfer all passengers on board the Hanta virus stricken cruise ship has been successfully completed. More than 120 passengers are now being cared for because of the long incubation period of up to six weeks. More cases may be reported in coming days as passengers return to their countries where they are being quarantined and tested in specialized facilities or at home. In a news conference this morning, the W. H. O. says the risk to the global population remains low. It comes as at least 41 americans in a dozen states coast to coast are being monitored for Hanta virus. The CDC says 16 of them were not on the cruise where this outbreak started. They may have been exposed during travel on flights in Kansas. Three people have been transferred to the hospital for observation. Officials say they had high risk exposure to an infected person who was not on the ship while abroad. Dr Steven Kornfeld, the acting doctor on the cruise ship, is the only american known to test positive from the ship. The medical director of the Nebraska biocontainment unit tells ABC News she does not believe Kornfeld ever had the virus. That's what I suspect was that initial test was false positive. Kornfeld's most recent test came back negative emotionally. I felt wonderful. It's nice to be negative for Hanta virus. He's been moved to a quarantine unit where he's now debating whether to stay in Nebraska and quarantine for the recommended 42 days or finish his time from his home in Bend, Oregon. I think everybody in this unit is sort of having that discussion with their own health system and with their family. Some will probably stay here the entire time. Some may ultimately go home. Kornfeld says if he did go home, he would not fly commercial. The W. H. O. says the captain of the ship and the crew is still on board. Nobody is showing symptoms. The ship is expected to dock in the Netherlands on monday in new york perry russell channel six action news.