As a rule, no special vaccinations are required for travel to Cologne, Germany. This applies to most travelers from countries with advanced health care systems. However, it is recommended to ensure that routine vaccinations are up to date before traveling, such as measles, mumps and rubella (MMR), diphtheria-tetanus-pertussis and the annual flu shot. It is best to consult a physician for the most accurate information tailored to your personal health circumstances.