One of just two people in the world to be cured of HIV has shared details about his rare recovery.
Adam Castillejo, a Venezuelan chef who lives in England, was previously known only as the "London Patient".
But now, Castillejo has come forward to reveal his identity in a bid to give hope to others with HIV.
As well as having HIV, the 40-year-old was also diagnosed with blood cancer in 2011.
He was cured of both after receiving a bone marrow transplant from a donor with HIV-resistant genes in 2016.
Following the procedure, Castillejo's doctors hesitated to say he had been cured, saying instead he was in "remission".
But now, medical experts have more confidence the results are final.
"We think this is a cure now, because it’s been another year and we’ve done a few more tests," his doctor, Dr Ravindra Gupta of the University of Cambridge, told The New York Times.
Castillejo said he initially wanted to remain anonymous but eventually decided to speak out to inspire others.
He told The New York Times he was in a "unique and very humbling position".
"I want to be an ambassador of hope."
Although Castillejo struck it lucky, due to the risks involved experts say it is not a practical solution for most people with HIV.
However, the fact that stem cell transplantation was able to be repeated gave doctors hope for the future, Dr Gupta said.
The first person to be cured of HIV was American Timothy Brown - the so-called "Berlin Patient" - who also had cancer and was given a stem cell transplant.
