The National Institutes of Health announced Saturday it expects to admit a patient exposed to the Ebola virus in the "coming days."
The patient is an American doctor who was exposed to the virus while volunteering in Sierra Leone, according to a statement from the NIH.
Health officials did not release a name, but said the patient will be admitted to the NIH Clinical Center in Bethesda, Md., for "observation and to enroll in a clinical study."
John Burklow, a spokesman for the NIH, said the patient could arrive as early as Sunday.
So far this year, three American doctors and a nurse have been infected with Ebola while working in West Africa, according to the Centers for Disease Control.
They have received treatment at hospitals in Nebraska and Georgia.