Five Americans Released after Ebola Monitoring

Five U.S. health workers monitored for three weeks by doctors in Nebraska after being exposed to Ebola in West Africa have all been released, officials said Wednesday.

They are all clinicians who worked with Boston-based aid group Partners in Health.

The five treated in Nebraska were exposed to Ebola in Sierra Leone in March, but did not develop the disease.

"All five people have now completed their quarantine period for Ebola," Nebraska Medicine said on Twitter.

Four of the health workers left Omaha immediately and "the fifth, who had a cardiac-related issue on Saturday has now been discharged from the hospital and will leave the area soon," it added.

The condition of the fellow clinician to whom they were exposed while working in Sierra Leone has improved and is now listed in fair condition, hospital officials said Monday.

PIH co-founder Paul Farmer said that the man had, "in the opinion of some of the best doctors and nurses in the world, turned the corner," after his condition improved from critical to serious.

The patient, who has not been named, was evacuated from Sierra Leone on March 14 and brought to the National Institutes of Health's Clinical Center in Bethesda, Maryland just outside Washington for treatment.

The NIH is the premier U.S. medical research center in the United States.

More than 10,400 people have died of the Ebola virus since the West African outbreak was identified in early 2014.