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Today about 40 % of babies are infected with intrauterine infections. The immune statuses of children during the neonatal period are largely associated with the patterns of pregnancies in their mothers. This work aimed to study clinical and immunological features in newborns of mothers with intrauterine infection. 48 infants were observed. Neonates were divided into two groups: group 1 – 33 newborns from mothers infected with cytomegalovirus infection, group 2 – 15 children from healthy mothers. The diagnosis of intrauterine infection verifizierung the basis of survey questionnaire for pregnant women, outpatient data of pregnant women and neonates, serologic study, PCR, ELISA, and the cellular immunity and humoral immunity. Somatic and obstetric and gynecological history of mothers was thoroughly collected and the risk factors for the development of complications in the early period of adaptation were assessed. The result of the study revealed that the structure of risk factors in pregnant women with intrauterine infections is of great importance the age of 30 years, genital and extragenital pathology during pregnancy, spontaneous abortions and non-developing pregnancy, abortion. Associated viral infections (CMV, Cytomegalovirus) predominate in the structure of congenital infection. The analysis indicates significantly burdened perinatal anamnesis in children infectious factors and factors of perinatal hypoxia. The leading clinical symptoms for intrauterine infections among the examined children are in the early neonatal period prematurity asphyxia, urinary symptoms, late neonatal period differ polymorphism symptomatic. In this period reveals a specific organ of the Central nervous system. In newborns with intrauterine infections observed inhibition of immunological indicators (CD4+, Cd8+, Cd 19+).

<b>Introduction:</b> The study of the genetic aspects of bone metabolism disorders in children is a theoretical and practical interest for pediatrics, especially according to the age and ethnic positions. There is a number of gene polymorphisms&nbsp;(primarily the vitamin D receptor (VDR) gene) that determine the norm and pathology of bone tissue formation. Calcium absorption worsens when there is no functional VDR and active forms of vitamin D. As a result the level of bone mineralization decreases. In children such disorders lead to the development of osteopenia.<br /> <b>Objective:</b> To determine the frequency of allelic variants of the VDR gene (rs1544410, rs2228570) and to evaluate its relationship with the level of vitamin D in children under one year old in the Kazakh population.<br /> <b>Material and methods</b>: 197 children under one year of age were examined for vitamin D by electrochemiluminescent immunoassay and genotyping of the VDR polymorphism (rs1544410, rs2228570) by PCR.<br /> <b>Results:</b> It was found out that children with the C allele of the VDR rs2228570 gene have a reduced level of vitamin D by 1.84 times (95% CI 1.10 - 3.07) and CC - by 2.3 times compared with children with normal vitamin D levels.<br /> Statistical analysis by the Kruskal-Wallis method showed that the serum level of vitamin D in AA carriers for the VDR rs1544410 was significantly reduced comparing to the level in GG and GA carriers (p=0.03).<br /> <b>Conclusion:</b> The study confirms the need for further in-depth study of the genetic aspects of bone metabolism disorders in children for the development of personalized medicine.