Sir—In your June 15 Editorial,¹ you discuss the UN World Food Summit. In June, 2002, the UN Food and Agriculture Organization (FAO) and the World Food Programme (WFP) warned at the World Food Summit of a severe, mainly drought-induced, food crisis affecting about 13 million people in six southern African countries—Lesotho, Malawi, Mozambique, Swaziland, Zambia, and Zimbabwe—which are also struck by highly prevalent HIV-1 infection (around 15–36% in adults)² and tuberculosis (co-infection in a third of HIV-1-infected people). We stress the potential impact of protein energy malnutrition on the incidence of tuberculosis.