This week, a major milestone in HIV/AIDS research made headlines worldwide. A man known as the "London Patient" has seemingly been "cured" after receiving a bone marrow transplant from a donor with an HIV-resistant genetic mutation. It's only the second time in history a procedure like this has been executed successfully. But while some doctors are inspired by this week's breakthrough, others are more cautious in their optimism. Today on Front Burner, we track the historical battle against the virus and what it means for future progress with help from Canada Research Chair in HIV Pathogenesis and Viral Control, Eric Arts.