[The Conversation Africa] For many of us, the case for childhood vaccination seems self-evident. Every year, this powerful public health intervention protects billions of children from deadly and debilitating infections like polio and measles. Yet worldwide, many parents are reluctant - if not outright refusing - to vaccinate their children. This includes parents who have access to vaccines, are well-educated, and have enjoyed the benefits of having their children grow up in a world free of many vaccine-preventable diseases.