Pauline Cafferkey, the British nurse who became infected with Ebola while volunteering in Sierra Leone, is now fully recovered and has is no longer in the hospital.

"We are delighted that Pauline has recovered and is now well enough to go home. I am very proud of the staff who have been caring for her. It is because of the skill and hard work of the entire team that she is now able to go home," Dr Michael Jacobs, head of the infectious diseases team of Royal Free Hospital in London said in a statement.

Earlier this month, Cafferkey was reported to be in critical condition after being treated with an experimental antiviral drug and blood from Ebola survivors. Doctors admitted that it was "very difficult" to tell how the patients will react to the treatment because it was tested only on a small group of people.

Cafferkey was infected with Ebola after volunteering with Save the Children in Sierra Leone. She started getting ill and had a high fever when she was flown back to Scotland in late December. Doctors confirmed that she contracted the virus and was immediately transferred to an isolation unit at the Royal Free Hospital in London where she received treatment and care for more than three weeks.

Doctors announced on Saturday that the 39-year-old nurse is fully cleared of the virus and has been discharged.

"I am just happy to be alive. I still don't feel 100 percent, I feel quite weak, but I'm looking forward to going home. I want to say a big thank you to the staff who treated me - they were amazing. They were always very reassuring and I knew I was in the best hands. They saved my life," Cafferkey told The Telegraph.