Introduction: Vaccination or active immunization belongs to the greatest achievements of medical science. It is an important measure of prevention of contagious diseases. By delivering a specific antigen, a specific immunity is created that protects the recipient of a certain infectious disease. Apart from a positive impact on health, it also has an impact on the socioeconomic status of the individual and the community. Objective: To investigate attitudes of young parents on the vaccination of their own children and compare them to the attitudes of their parents. Identify sources of information and influence on the formation of attitudes about immunisation in the County of Zadar. Subjects and procedures: The research was conducted in the general / family and pediatric medical clinics in the area of Zadar, Biograd and Benkovac. 300 respondents, 150 younger and 150, attended voluntarily. The survey questionnaire investigated attitudes, experiences and knowledge about vaccination. The survey data obtained was statistically analyzed. Results: 300 participants were divided into younger and older age groups. Most of the respondents are married, employed, high school education and good economic status, most often with two children living in the city. The attitude toward vaccination is positive and most of the children examined are vaccinated without any difficulty after vaccination. The most important influence on the decision on vaccination was healthcare workers, whose support and cooperation were satisfied with the respondents. In this, the younger age group is significantly affected by social networks and the internet with more fears about vaccines. They want more information about vaccination, and they stick to adjuvants in vaccines. Older respondents support the view of the law on binding vaccination, believe that the most benefit from vaccination is only a child and do not believe in negative vaccine writings. Conclusion: Our respondents as a whole have a positive attitude towards vaccination, notice the benefits of vaccinating children, and hold that untreated children pose a risk to the wider community. They are well informed and satisfied with the co-operation with healthcare professionals, although some influence on attitudes has media and social networks.