The New York City doctor who is being treated for Ebola should be moved out of the isolation room at Bellevue Hospital Center soon, the president of the New York City Health and Hospitals Corp. said Thursday.

Dr. Craig Spencer, 33, was diagnosed late last month. His condition was upgraded over the weekend from serious to stable. He has been in isolation since Oct. 23.

"He [Spencer] continues to be stable and is making good progress," Dr. Ram Raju, the HHC president, said during an appearance in Coney Island. "And hopefully, he'll be able to come off isolation soon."

The Associated Press reported Thursday that Spencer, who lives in West Harlem, had requested a banjo and an exercise bike and has been using both.

Spencer tested positive for Ebola after treating patients in the West African nation of Guinea with the group, Doctors Without Borders.

New York City officials said Wednesday that they are now monitoring 357 people for signs of Ebola -- including volunteers who returned from Africa in the past three weeks and personnel involved in treating the infected doctor in Manhattan.

The city also said the second of three associates who came in contact with Spencer just before his diagnosis is being freed from city-ordered quarantine. The friend, who has not been publicly named, is now subject to "direct active monitoring" -- a determination made "after additional physician review."

The first friend of Spencer's was released from quarantine last week. Spencer's fiancee remains under quarantine.

Ebola can only spread through direct contact with the bodily fluids of someone who is already showing symptoms of the disease.

According to the Centers for Disease Control and Prevention, 13,042 people have contracted Ebola as a result of the outbreak in West Africa and 4,818 have died, including one in the United States.