↓ Yellow fever, HIV, BCG, MVA85A TB vaccines in African cohorts ↓ HIV Ad26.EnvA.01 and Ad35-EnvA candidate vaccines in African cohort  Measles vaccine heterogeneity due to CD46 and SLAM gene polymorphism ↓ Tetanus toxoid, Mtb PPD in rural subjects. This evidence concerns the gene SLAMF1 and viral infectious disease.