(FILES) A file photo taken on February 3, 2015 shows Malawians going through a medical checkup by a paramedic from a non-governmental organisation in Makhanga in the southern Malawian district of Nsanje. - Malawi launches on April 23, 2019 the first life-size test of the most advanced experimental vaccine to date against malaria, a disease that causes hundreds of thousands of deaths each year in Africa. (Photo by MAURICIO FERRETTI / AFP) — AFP or licensors