For years, Philip Goulder has been obsessed with a particularly captivating idea: In the hunt for an HIV cure, could children hold the answers?Starting in the mid-2010s, the University of Oxford pediatrician and immunologist began working with scientists in the South African province of KwaZulu-Natal, with the aim of tracking several hundred children who had acquired HIV from their mothers, either during pregnancy, childbirth, or breastfeeding.After putting the children on antiretroviral drugs e...