Objective. The aim of the study was to assess the completeness and timeliness of vaccination of children in outpatient settings within the time limits regulated by the National calendar of preventive vaccinations. Methods. The analysis of 631 child development stories and maps of preventive vaccinations of children under 18 months of age. The completeness and timeliness of vaccination coverage for hepatitis B, tuberculosis, poliomyelitis, diphtheria, tetanus, pertussis, measles, rubella and mumps were evaluated, and the reasons for the lack of vaccination and the timing and continuation of vaccination were analyzed. Results. Insufficient coverage of children with vaccinations in the decreed ages (for all vaccinations In the national calendar, which were subject to evaluation) was revealed. The reasons for the unattractiveness of children in the maternity hospital were parents' refusal to vaccinate and medical contraindications (prematurity and low birth weight, respiratory failure, neonatal jaundice, HIV infection in the mother). In the clinic the leading causes of violation of the schedule of vaccination was temporary medical branches (acute illness and exacerbation of chronic), delayed appearance to the vaccine, and failure of parents. Defects of filling of medical records in the nursing home and in the clinic. Conclusions. In this regard, at the present stage, the important areas of work on vaccine prophylaxis are: high-quality filling of medical documentation, the creation of a single electronic database on vaccinations of the population with the ability to work in it specialists of medical organizations and public and private health care system, and the work of medical personnel with the population to abandon vaccination and improve the Executive discipline of parents in terms of timely.