Objective: The objective of this research was to get to know the level of knowledge and beliefs concerning preventive vaccination among parents of children up to 2 years of age
Material And Methods: The survey was carried out in 2015 in a group of 120 parents of children aged 2 or less in the capital city of Warsaw and its vicinity. An original survey questionnaire was applied. Descriptive statistics methods were applied
Results: The most numerous researched group were people aged 20-40 (79.