About this report This story, the latest installment in an 18-month investigation of the Bill & Melinda Gates Foundation, is based in part on a review of hundreds of foundation grant descriptions, policies, evaluation reports and tax returns.
Reporting included more than 130 interviews with patients, medical professionals and administrators in Lesotho, Rwanda and other African nations and with global health experts in Europe, Africa and the United States.
More than 240 scholarly articles, books and studies on health conditions in Africa were reviewed, along with thousands of pages of financial and performance data, reports and evaluations from the Global Fund to Fight AIDS, Tuberculosis and Malaria, the GAVI Alliance and other financing groups and aid organizations.
Statistical data on health conditions in Africa were obtained from the World Health Organization, the World Bank and UNICEF, as well as national ministries of health and nongovernmental organizations.
Previous articles about the Gates Foundation are available at latimes.com/gates.
About this report