Estimates of WHO and UNICEF vaccination coverage may provide some insight into the extent to which vaccinations are administered on time. Yet, lack of adherence to the recommended age group for a specific vaccination will prolong the risk of lack of protection, often when disease risk is highest, such as during early infancy.

AMP has estimated the reported age at vaccination, and vaccine coverage at different ages in children from five sub-Saharan African countries: Burkina Faso, Ghana, Kenya, Senegal, and Tanzania. The age-appropriate vaccination for the three infant doses of pentavalent vaccine (DTP-HepB-Hib) and the first dose of measles-containing-vaccine (MCV) was estimated in these countries, as well as the proportion of children immunized with these antigens by a certain age. Vitamin A supplementation coverage was also evaluated as a potential contact visit for vaccination.