sed Centers for Disease Control, where he is being treated in an isolation unit, said on Sunday.
A second American infected with the virus while working in Liberia was flying back to the United States on Tuesday.
The Christian missionary group SIM USA said Nancy Writebol, 60, was in a “serious but stable condition”.
A man was admitted to a New York City hospital Monday with Ebola-like symptoms though odds are he is not infected, a hospital official said.
The patient, who was placed under strict isolation, had recently travelled to West Africa, said David Reich, president of Mount Sinai Hospital in New York.