Aim. To study the problems of organizing vaccination of children in children's clinics to develop measures aimed at increasing the coverage of children with vaccination. Methods. On the basis of 7 children's polyclinics in Saint Petersburg, an anonymous survey of 1724 mothers who had children aged 1 year was carried out by random sampling according to a specially developed form Questionnaire for a mother of a child aged one year. The representativeness of this sample was tested by professor A.M. Merkova's method, the error did not exceed 2.2%. Results. 15.7% of children had violations of the vaccination status, 4.9% of them were not completely vaccinated. The main reason for refusal from vaccination in 89.8% of cases with partial vaccination and in 82.5% of cases with complete refusal was medical contraindications related to the childs state of health. The most common causes of vaccination against individual childhood infections (partial vaccination) were the belief that there is no danger of infection with childhood infectious diseases (81.3%) and the fear of possible post-vaccination complications (69.7%). Parents completely refused vaccinations most often because of doubts about the quality of vaccines (74.4%) and fear of possible post-vaccination complications (66.7%). 69.5% of parents whose children were vaccinated in the first year of life did not receive complete information from the doctor about the vaccine and the disease that the child will be vaccinated with, as well as the possible consequences of immunization. In 76.6% of partially and completely vaccinated children, immunization was not organized in accordance with the guidelines. At the same time, in 49.1% of them, the health worker specified the information about the state of health after vaccination by phone call the day after immunization, and 1.7% of children had no follow-up after vaccination. Conclusion. The organization of vaccine prophylaxis in children's clinics has a significant number of unresolved problems, which can lead to a further decrease in the coverage of children with vaccination against vaccine-controlled infections.

Aim. To conduct an objective and subjective assessment of the impact of breastfeeding duration on children's health. Methods. For a subjective assessment, a survey with random sampling of 476 mothers of children under the age of 1 year was conducted. For an objective assessment of health, the copying of data from the form 112/u “Case history of child's development” was used. The representativeness of this sample was tested by the method of Professor A.M. Merkov, with the error not exceeding 4%. Results. The majority of women participating in the survey indicated that after discharge from the obstetric hospital, they continued breastfeeding for up to 3 months (21.8%) and up to 6 months (25.3%). The study revealed a statistically significant relationship between the subjective assessment of children's health and the duration of breastfeeding. The highest subjective health score was in children who received breast milk up to 6 and 12 months (4.2±0.09 and 4.3±0.07), the lowest — in children who were formula-fed (3.1±0.10). The performed analysis of the dependence of the proportion of healthy children on the duration of breastfeeding demonstrated the direct strong correlation between the indicators (rxy=0.88). The presence of an inverse strong correlation was established between the proportion of children with chronic diseases and the duration of breastfeeding (rxy=–0.88). In addition, the longer the period of feeding the baby with breast milk, the lower the incidence of acute diseases during the first year of life (rxy=–0.85). Conclusion. Assessment of the child's health, both subjective and objective, depends on the duration of breastfeeding; infants who are breastfed longer during the first year are less likely to get sick and generally have better health.