Background. Recurrent spontaneous urticaria (RSU) is rare in children, thus, it is debilitating condition that always requires treatment. There are several limitations on the drugs use in children with RSU. Omalizumab is the effective medication for achieving the control of RSU, used in adolescents over 12 years of age.

The aim of the study is to compare the efficiency of various approaches for RSU management in children.

Methods. The three-year comparative study of patients with RSU aged from 1 to 17 years managed only with 2nd generation antihistamines in standard or increased doses for at least 3 months and patients managed in addition to standard treatment with omalizumab (300 mg once in 4 weeks subcutaneously) was conducted. The essential treatment outcomes are achieving control of the disease (UAS7 = 0) in 6 months and remission maintaining after 36 months of observation. Additional outcomes are decrease in the number of aggravations that required the use of glucocorticosteroids (GCS) during 3 years of followup; analysis of treatment outcomes of patients with severe urticaria in subgroups (including UAS7 levels).

Results. The frequency of disease control (UAS7 = 0) by 6 months of therapy was significantly higher in patients of the omalizumab group — 76%, in the second group — 0%. The UAS7 in the omalizumab group was 0 (0; 1) points, in the group of patients on standard therapy — 13 (10; 16) points (p < 0.05). Remission was observed in 53% of patients (9 people) in the omalizumab group in 36 months, in the comparison group — in 32% (13 people), p = 0.129; UAS7 in the omalizumab group was 0 (0; 8.5) points, in the comparison group — 8 (0; 13) points, p = 0.076. The use of systemic GCS for acute treatment decreased during 3 years of follow-up: in the omalizumab group — from 41 to 5.9%, in the group on 2nd generation antihistamines — from 46 to 19% (p = 0.258). The result of subgroup analysis was similar.

Conclusion. Adding omalizumab to standard RSU therapy makes it possible to achieve control of the disease reliably faster in most cases. There was gradual decrease in RSU activity in the group on standard therapy during the 3-year follow-up: spontaneous remission was mentioned in 32% of children within 3 years.

The Ministry of Health of the Russian Federation jointly with professional association and experts in the field of pediatrics, infectious diseases and resuscitation has revised guidelines “Clinical Features and Management of the Disease Caused by New Coronaviral Infection (COVID-19) in Children” in order to provide the child population with effective medical care during the pandemic of the new coronaviral infection. The practical experience of specialists from various countries was considered during the development of this document. Special attention should be given to the evidence base of the presented data, as well as to the efficiency and safety issues of medications used in treatment of coronaviral infection and its complications. The authors highlight the problems of prevention, diagnostics and management of pathological conditions caused by COVID-19 in the article according to the presented guidelines. Patient’s management is presented depending on the age and severity of the disease itself. The therapy is considered with regard to etiological, pathogenetic and symptom focus.

The article devoted to children's outpatient care in the USSR in the 1930s presents the results of a historical and medical study reflecting the establishment of the primary children's health care. The aim of the study is to show the functional activities of children's health centers and outpatient clinics that provided preventive and therapeutic care for children and adolescents (based on archival and literary sources). The research is relevant because it is necessary to study the historical experience of the organizational foundations of the Soviet system of children's health care in order to learn lessons from the past for solving some current problems in the modernization of the primary children's health care due to attempts to reduce government involvement in medical service. The analysis of the study has shown that all measures for increasing the number of outpatient clinics, improvement of the quality of therapeutic and preventive activities enabled to achieve greater coverage with medical care for children in the USSR, to promote better and timely medical care, and to reduce children morbidity and mortality.

Background. New coronaviral infection (COVID-19) in most cases has less severe course in children than in adults. However, there were reports from the number of European countries and from United States (from March 2020) about children with new disease with signs of Kawasaki disease (KD) and toxic shock syndrome (TSS). So it has received one of the names children’s multisystem inflammatory syndrome (CMIS) associated with COVID-19. The aim of the study is to summarize up-to-date information about this disease.

Methods. Information search in PubMed database, CDC (USA) and WHO websites, Search for information in PubMed database, on CDC (USA) and WHO websites, analysis of the medical records of observed patient with CMIS.

Results. Clinical and laboratoryinstrumental manifestation and outcomes of CMIS in 120 children from Italy, France, Switzerland, England, USA with similar signs were analyzed. Proposed international diagnostic criteria of the disease in comparison with other phenotypically similar diseases (KD, shock syndrome at KD, TSS of Staphylococcal and Streptococcal etiology, macrophage activation syndrome), clinical observation of patient, algorithm of evaluation and management of patients with CMIS are presented.