Nowadays the question of vaccination plays a critical role in society. The low about vaccination was debated for a long time, and even now some families have doubts about it. In my opinion, it is a controversial question because it depends on many predictions and the type of illness (first of all, how many resources already exist). On the one hand, I can understand the worries of parents about vaccination, because even in science articles they can find information about side effects and consequences of the same kind of vaccine. For example in Ukraine, with a new law, the government is strongly recommending getting the vaccine from COVID for babies from 0 to 6 months, without previous resources. On the other hand, we as a humanity can prove that the vaccine has already saved a lot of lives, and it is important not only to the person but also for the development of group immunity.