Dr Lucy Dorrell tells us how our immune system controls HIV and how we can live with this virus. There are currently around 91,000 people in the UK living with HIV/AIDS. HIV is a challenging target for a vaccine because it can mutate its genetic makeup. Dr Lucy Dorrell aims to develop immunotherapy to reduce dependence on antiretroviral therapy (ART), the current standard treatment for those infected with HIV-1. Worldwide, 9 million of the estimated 33 million people living with HIV/AIDS today are not able to access the ARTs which they are in immediate need of.