Pneumococcal diseases are one of the serious global
public health problems, which seriously threa-
tens the
health and brings heavy
economic burden to
children and
adults in the world.Pneumococcal conjugated
vaccines (PCVs) have been proved to be a safe and effective intervention to prevent invasive and non-invasive
pneumococcal diseases.PCVs are conducive to saving lives, preventing disability and lowering
costs in the world, especially in
Africa and
Asia.