Background: On 1 January 2020, the UNCRC was incorporated into the Swedish national law. The Convention argues that all children have the right to health, life, survival and development. The Articles of the UNCRC require higher authorities, health facilities and parents to act in the best interest of children, and to do everything to secure children’s rights. Interpreting the Convention, it is possible to conclude that all children have the right to safe and effective vaccines. Even though vaccines are accessible and free of charge to all children in Sweden, vaccination coverage for multiple vaccine-preventable diseases in Sweden has dropped. As one of the reasons for this drop in vaccination coverage is proposed vaccination hesitancy. To fulfil children’s rights as proposed in the UNCRC, vaccination hesitancy needs to be understood and addressed.  Aim: The objective of the study is to understand causes of vaccination hesitancy among parents living in Stockholm, Sweden and to examine how healthcare professionals in Stockholm County are working to eliminate vaccination hesitancy, in goal to promote children’s rights to health, life, survival and development after the UNCRC became a Swedish law on 1 January 2020. Additionally, to analyze if strategies applied by Stockholm County are truly addressing identified causes of vaccination hesitancy among parents living in Stockholm, Sweden and in that way increasing vaccination rates this year. Method: This study used a qualitative research strategy. Vaccination hesitancy in Sweden was studied using 20 semi-structured interviews with parents living in Stockholm, while effect of the UNCRC incorporation into Swedish law on vaccination hesitancy was studied using a semi-structured interview with one health professional working in Stockholm County. The gathered data was summarized, categorized and analyzed according to the proposed themes of two theories. The theoretical framework consisted of the Health Belief Model and Social-Ecological Model. Conclusion: It was possible to conclude that the choice of immunization among parents is shaped by; 1) sources and type of the received information on vaccines, vaccination and vaccine-preventable diseases included in the general Swedish child vaccination program, 2) their views on vaccine quality, safety, effectiveness and necessity for satisfying children’s rights to health, life, survival and development, 3) the level of knowledge of epidemiological concepts, mechanisms, infectious diseases and vaccines included in the vaccination program, and 4) the level of trust in the Swedish Government and healthcare, and belief if they are acting in the best interest of children. After the UNCRC incorporation into Swedish law, there have not been observed any changes in the strategic work of Stockholm County against vaccination hesitancy. For the past ten years, they are applying methods at the individual- and interpersonal level, which are not quite reaching vaccine hesitant parents living in Stockholm. Other methods at the community- and public policy level are needed. Due to unclear implications of the UNCRC entrance as a national law and COVID-19 pandemic, it is not possible to estimate if there are any changes in the vaccination rates this year.