A high-risk stem cell transplant has rid a middle-aged man of any signs of the human immunodeficiency virus (HIV) more than nine years after treatment.
One case involved a man with cancer who underwent a specialized stem cell transplant; the other involved a woman who received immune-boosting therapies as part of a clinical trial.
A 30-year-old woman from the city of Esperanza, Argentina - the so-called Esperanza Patient - appears to be the second person whose immune system cleared the HIV-1 virus without antiretroviral therapy.