Cars pass Manhattan's Bellevue Hospital. (Associated Press)
New York Mayor Bill de Blasio says a doctor who recently returned to the city after treating Ebola patients in West Africa has tested positive for the virus.
It's the first case in the city.
The mayor says there's no reason for residents to be alarmed by Thursday's Ebola diagnosis.
The doctor had been working in Guinea with the medical relief charity Doctors Without Borders. He returned more than a week ago and reported on Thursday coming down with a 103-degree fever and diarrhea. He was being treated in an isolation ward at Manhattan's Bellevue Hospital, a designated Ebola centre.
The doctor's Harlem apartment has been cordoned off. The city's disease detectives have been tracing his contacts to identify anyone who may be at risk.