NEW YORK (CBSNewYork/AP) — The condition of the Ebola patient being treated at a New York City hospital has improved, according to hospital officials.

The New York City Health and Hospitals Corporation issued an upgrade for Dr. Craig Spencer on Saturday morning.

“Based on our patient’s clinical progress and response to treatment, today HHC is updating his condition to ‘stable’ from ‘serious but stable.’ The patient will remain in isolation and continue to receive full treatment,” Health and Hospitals Corporation said in a statement.

Web Extra: More On Ebola From The CDC

The agency runs Bellevue Hospital Center, where Spencer has been undergoing treatment since he was brought there nine days ago.

Spencer became ill several days after returning to New York City from Guinea, where he was treating Ebola patients with Doctors Without Borders.

Spencer is the only confirmed Ebola patient in New York.

His case led Gov. Andrew Cuomo and Gov. Chris Christie to instate a mandatory quarantine for anyone returning to the area who has been exposed to Ebola in West Africa.

Spencer’s fiance remains quarantined at their Hamilton Heights apartment.

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