After general hygiene improvements – first of all clean water supply – vaccines represent the most effective and cost-saving public health intervention. Still, vaccines continue to be under-used all over the world.
In developing countries money shortage and poor socio-economic situation are the main reasons for low vaccination coverage. In wealthy regions other factors usually affect immunisation programs. These factors are complex; false beliefs, ignorance, lack of advocacy are often on the basis of the failure of vaccination strategies.
Information and communication play key roles in such an issue. Improving knowledge about immunisation and confidence in vaccines among decision-makers, general public and health care workers remains a main goal to achieve in the fight against infectious diseases.