The constantly propagated claim that vaccination protects us is increasingly being doubted. Interest in books that question the purpose of vaccination is on the rise. It is understandable that a new edition of this book became necessary after just one year. For current reasons, some chapters have been added. This book aims to encourage readers to rethink the common hypotheses of vaccination theory. These include infection, bacteria and viruses as causes of disease, the antigen-antibody theory, the decline of epidemics due to vaccinations, diseases as independent entities, etc. Each of these hypotheses stands on shaky ground. Additional focuses include vaccine injuries and several chapters on the prevention of colds and their treatment with homeopathy and Kneipp therapy.