Mass Immunization and Vaccine Hesitancy in Children and Their Families: A Long and Winding Road Ahead to Address without a Second Thought

In 2019, vaccine hesitancy (VH), defined by the SAGE working group as “delay in acceptance or refusal of vaccination despite availability of vaccination services” appeared on the WHO list of the top 10 public health threats requiring urgent attention, along with other global issues much more covered by media, such as Ebola virus infec- tion and climate change. This has led several countries worldwide to enact, strengthen or contemplate mandatory and/or recommended infant and childhood immunization to cover this gap.