J&J HIV vaccine fails study in Africa, but a separate clinical trial continues in Europe, Americas August 31, 2021 Auto Bot BioPharma, biopharma nl, Clinical Trials, HIV, Johnson & Johnson, National Institutes of Health, Pharma 0 Johnson & Johnson reported results from a mid-stage study in southern Africa showing just 25% efficacy for its HIV vaccine. J&J developed the HIV vaccine with the same technology used in its successful Ebola and Covid-19 vaccines.