(NBC NEWS) Declaring his cure a miracle, a doctor infected with the Ebola virus while working to save patients in West Africa walked out of an Atlanta hospital on Thursday. Hospital officials said they released a colleague quietly on Tuesday at her request.

“Today is a miraculous day. I am thrilled to be alive, to be well and to be reunited with my family,” Dr. Kent Brantly, 33, of Christian aid organization Samaritan’s Purse, told a news conference.

Nancy Writebol, 59, an aid worker who also contracted Ebola while doing missionary aid work in Liberia, was discharged from the hospital on Tuesday, according to Emory and the aid group SIM. She is spending private time with her husband. “As she walked out of her isolation room, all she could say was ‘To God be the glory,'” Brantly said.

Note: Read our discussion guidelines before commenting.