COVID-19 has already entered history and will leave its indelible mark there. Namely, in 2020, the life of people around the world changed suddenly, something that seemed unimaginable, became a reality. People all over the world started wearing masks every day to protect themselves from diseases, but there was also a period when the authorities of certain countries prevented residents from leaving their homes in order to suppress the virus that began to rule the Earth as successfully as possible. About two and a half years later, the virus is still there, we live with it. Science has adapted, some new measures have been adopted, but what is there with the virus is the vaccine. Vaccination against COVID-19 is the topic of this paper, what are the attitudes and behaviors related to vaccination against COVID-19 in Croatia, is the title of this paper. The paper will present data related to vaccination in general, and will also follow the development of diseases caused by the coronavirus with the use of relevant scientific literature. However, the emphasis in the paper is on the research conducted by the author, therefore the second part of the paper will bring survey results on attitudes and behavior regarding vaccination against COVID.