Vaccines are biological preparations made from live or dead microorganisms causing infectious disease or from parts of them which when introduced in a human body make it build immunity to the respective disease, without causing damage to the body itself. Vaccine prophylaxis is the main method of preventing severe diseases causing disabilities or death. Vaccines benefit not only the individual, but also the society, because they prevent the outbreak of epidemics, “herd immunity” is built, and allow the elimination of infectious diseases globally. Yet, there are people who believe that vaccines will make you “sick” and they exist because pharmaceutical companies earn profits from them. It may sound cynical, but the latter probably earn more from sick people than from prophylaxis which actually reduces the treatment cost of certain sick people. Studies show that not getting vaccinated leads to reduction of the immunisation coverage of a country and, respectively, to the comeback of certain infectious diseases, which would cause severe conditions with numerous complications and eventually death. Such diseases are poliomyelitis, tuberculosis, measles, etc. To date, WHO sounds the alarm that every year 1.5 million children die due to not being vaccinated against infectious diseases. Refusing to get vaccinated is an irresponsible decision impacting the whole society. For example, children too young to be vaccinated, pregnant women, immunocompromised people, who cannot get vaccinated, will be at risk of getting infected. In order to achieve a substantial herd immunity against a certain disease, vaccine prophylaxis need to cover at least 90% of the population. This is why we, as parents, need to be responsible towards our children and the community we live in.