Nancy Writebol's husband, David, released from quarantine, visits her in Atlanta

Nancy and David WritebolNBC News/Facebook

Humanitarian worker David Writebol was released from quarantine in North Carolina on Sunday, and was able to visit his wife for the first time since they left Liberia.

Nancy Writebol remains in an isolation centre in Atlanta, but David expressed jubilation that he was able to see her and speak to her through a window in the ward.

The couple were aiding Ebola patients in Monrovia through the Serving in Mission humanitarian group when Nancy and Samaritan's Purse doctor Kent Brantly became infected with the deadly Ebola virus.

Upon being medically evacuated to the United States, David and two other missionaries were transported to an isolated, North Carolina RV camp, while Nancy and Dr. Brantly received treatment at Emory University Hospital.

After being in quarantine for three weeks, David was reunited with his wife late Sunday.

"I have completed the 21-day period of precautionary temperature and health monitoring and reporting as mandated by local and state public health authorities, with no symptoms of Ebola Virus Disease," David said in a statement. "I therefore was cleared to travel to Emory University Hospital to be reunited with Nancy and observe her recovery and return to health.

"I have had the great joy to be able to look through the isolation room glass and see my beautiful wife again. We both placed our hands on opposite sides of the glass, moved with tears to look at each other again. She was standing with her radiant smile, happy beyond words.

"She is continuing to slowly gain strength, eager for the day when the barriers separating us are set aside, and we can simply hold each other. We prayed together over the intercom, praising our great and mighty God for his goodness to us.

"My family and I look forward to her speedy restoration, and we give thanks for continued prayers on her behalf."

Both Brantly and Writebol are reportedly recovering well after receiving the experimental drug ZMapp. The antibody cocktail was sent to Liberia last week, and officials hope the drug will help treat the infected and contain the virus' spread.

Over 1,000 people have been killed by the Ebola virus since the outbreak began in February.