The National Institutes of Health in Bethesda, Maryland, just outside the capital will hold a press conference at 11:30 am (2100 IST) to discuss the details of Nina Pham's release, a spokeswoman told AFP.
Pham was the first US healthcare worker to be infected with Ebola while working inside the United States, after Thomas Eric Duncan was admitted to Texas Health Presbyterian Hospital Dallas on September 28.
Duncan, who is believed to have been infected in his native Liberia before traveling to Texas to visit family, died on October 8.
Her colleague, nurse Amber Vinson, was also infected while caring for Duncan.
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Both women worked in the intensive care unit at the hospital and had extensive contact with Duncan when he sick, though it remains unknown exactly how they were infected.
Vinson's family said earlier this week that she too was now free of the Ebola virus, which has killed more than 4,800 people in West Africa so far this year.
Ebola is spread though close contact with the sweat, vomit, blood or other bodily fluids of an infected person.
Health care workers are at particular risk of contracting Ebola. Yesterday, a doctor in New York who had been working in Guinea was found to be infected with Ebola.
The 33-year-old doctor, identified in US media as Craig Spencer, arrived back in America's largest city at JFK airport on October 17.
A total of nine people with Ebola have been cared for in the United States. Only the Liberian patient has died of the virus here.
Meanwhile, the West African nation of Mali announced its first case of Ebola, in a two-year-old girl who had recently been in Guinea.