The so-called Berlin patient is famously the only person in the world who has been cured of HIV. But he may soon have company.

Two people in Boston also seem to be free of HIV after undergoing bone marrow transplants for cancer, just as the Berlin patient did five years ago. The crucial difference is that the Boston patients have not yet stopped taking anti-HIV drugs – although that may happen in the coming months. …

“As far as we’ve been able to measure, we can’t find evidence of HIV infection in the patients’ blood or blood plasma, and their antibody levels against HIV are dropping,” Dr. Daniel Kuritzkes of Brigham and Women’s Hospital told Shots. “The antibody evidence tells us there is little if any persisting HIV protein to trigger an anti-HIV response.”