'London patient' becomes second person ever cured of HIV

A 40-year-old man from London is believed to have become the second person in the world to be cured of HIV.

Adam Castillejo remains free of the virus 30 months after he stopped anti-retroviral therapy, doctors said. A stem-cell treatment he underwent for cancer also cured him of HIV, according to a study published in the medical journal The Lancet.

Lead researcher Professor Ravindra Kumar Gupta of the University of Cambridge told BBC News: "This represents HIV cure with almost certainty. "Our findings show that the success of stem-cell transplantation as a cure for HIV, first reported nine years ago in the Berlin patient, can be replicated."