A study conducted in a village in Senegal. During measles outbreak, 66 children had contracted measles and 149 had not. They had been followed for 4 years after recovery. In children who had measles, the risk of death from other infectious diseases was 86% lower. Most patients were unvaccinated.
Similar results were observed in Guinea Bissau (mortality among those who had measles was 50% lower), as well as in other Senegal study] (4 times lower mortality among those who had measles) and in Bangladesh.