title: First AIDS vaccine trial begins in Africa.
mesh_terms: D016915:AIDS Vaccines / Q000276:immunology; D000293:Adolescent; D000328:Adult; D000349:Africa; D017321:Clinical Trials, Phase I as Topic; D015658:HIV Infections / Q000276:immunology / Q000517:prevention & control*; D006801:Humans; D016032:Randomized Controlled Trials as Topic
chemical_list: D016915:AIDS Vaccines