There is so much negative information about vaccines, why should I believe that they are necessary?

Vaccination is a specific, most effective protection against infectious diseases. The effectiveness, safety, and impact of vaccination against infectious diseases have long been based on scientific evidence; research is constantly being conducted and results are published. For evidence-based information we recommend the publications by appropriate international organizations such as the World Health Organization and the European Centre for Disease Prevention and Control, as well as European Commission and scientific journals.