In Africa, the mortality from infectious diseases remains high. The investigators have discovered that live vaccines such as the BCG vaccine against tuberculosis and the measles vaccine can strengthen resistance to other infections: they have beneficial "non-specific effects". The investigators have now seen signs that these non-specific effects for children are stronger if their mother has been given the same vaccines. In Africa, BCG vaccine is recommended at birth and measles vaccine at 9 months of age. They are not used beyond childhood. The investigators will randomize 2400 women to BCG vaccine, measles vaccine, or placebo. The investigators will further randomize their children to an extra early measles vaccine or placebo. The investigators will assess which of the resulting six vaccination schedules are best for women's and children's protection against measles, for the child's immune system, and for general health. The project will be the first in the world to investigate the importance of vaccinating women with live vaccines.
Age range
15 Years – 35 Years
Sex
FEMALE
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Proportion of children with maternal measles antibody
Timeframe: 20 weeks of age
Proportion of children with maternal measles antibody
Timeframe: 9 months of age
Yellow fever viral load after yellow fever vaccine
Timeframe: 9 months of age