The intensity and duration of preservation of the immune response to viral hepatitis B after vaccination among the medical staff of the polyclinic was studied. Some features of postvaccinal immunity in medical staff were revealed. In 39.2 % of the surveyed, postvaccinal antibodies were not detected or their level was lower than protective, which is the basis for a course of vaccinations against the HV virus in this group of persons in the absence of contraindications for vaccination. The intensity of post-vaccination immunity to the HV virus among different groups of medical personnel of the polyclinic depends on the type of professional activity.

Urinary tract infections (UTIS) in the Russian Federation are widespread and often occur in children, adults, most often affecting people in the most active period of their lives. The course of UTI is determined by a number of predisposing factors, such as age, sex, General condition of the patient, the presence of immunocompromising factors. Uncontrolled use of antibacterial therapy is often a predisposing factor in the chronization of the process in the upper urinary tract.To determine the identity of E. coli strains. In 2019, biological material was collected from 50 patients of «Altai regional hospital for war veterans» with urinary tract infections (chronic pyelonephritis and chronic cystitis) to assess bacteriuria. According to the results of bacteriological research, 23 strains of E. coli were isolated. After that, molecular genetic analysis was performed using the Random Amplified Polymorphic DNA method of E. Coli strains obtained from patients with urinary tract infections, and their identity was evaluated. The results of this study showed that the method used is a reliable method of epidemiological mapping and determination of relationships between closely related varieties and strains of microorganisms isolated from various sources. Carrying out one bacteriological examination of urine in urinary tract infections is not enough, only high-tech techniques allow establishing the exact type of the causative agent of these infections and will allow selecting the correct appointment of antimicrobial drugs in patients with this group of infections.

In order to assess the epidemic situation in the diagnosis of infection caused by the Epstein-Barr virus, a retrospective epidemiological analysis of the incidence of infectious mononucleosis for the period from 1990 to 2018 was conducted in the Moscow region using generally accepted methods of statistical data processing. The description of the clinical case was based on the results of dynamic observation of the patient reflected in the outpatient chart. It is shown that against the background of increasing morbidity rates, there is an epidemiological problem with infectious mononucleosis. Despite the fact that children 0–14 years old are traditionally at risk for infectious mononucleosis, the epidemic process involves the adult population, whose incidence rates also tend to increase. The growth rate of in dicators in the age groups 0–14 and 15 years and older is comparable. The active form of EBV infection in adults can occur in the form of reactivation, which is illustrated by the clinical case described in the article. This case of reactivation of EB infection in an adult clearly illustrates the need to assess the current epidemic situation in differential diagnosis and inform clinicians of different specialties on the epidemiology of EB infection.

The article gives a hygienic characteristic of the factors of the labor process of employees of the main professions of the mining enterprise: severity and tension. Classes of working conditions are defined. Found that the priority factor of the labor process of workers in major industrial and occupational groups mining companies is the burden of work. The working conditions of the drilling rig operator, the sinker on the section of rifling work No. 6, the sinker on the section of mining and preparatory work No. 10, and the electrical mechanic on duty and for repairing equipment are classified as thirddegree hazardous (3.3). According to the criterion of labor intensity, the studied industrial and professional groups have an acceptable (2) and harmful class of working conditions of the first degree (3.1).

The problem of increasing the prevalence of visual impairment in schoolchildren is becoming especially urgent at the present time, when e-learning programs and new e-learning contents are being implemented in schools. It seems relevant to search for optimal characteristics of presenting information on screens, taking into account the specifics of the electronic devices and age-related physiological features of the users’ visual system. It was shown that the initial indicators of the visual analyzer in schoolchildren of basic general education are near the lower limit of the norm. Pupilsof this age are highly sensitive to visual load. Reading texts in 16- and 14-point font of 200 and 400 signs was carried out at the stable functioning of the visual system and the improvement of the critical flicker fusion frequency indicators of schoolchildren regardless of the used electronic device.Reading texts in 16- and 14-point font of 600 signs and in 12-point font of 400 signs led to a decrease in the lability of the visual analyzer, which became significant only using a laptop. The screens of tablets provides create more favorable visual working conditions than laptops and can increase the resistance to visual and general fatigue among schoolchildren. The development of visual fatigue was observed after reading texts typed in 12-point font of 600 signs and in 10-point font of 200 signs, both from a laptop and tablet. The obtained results provide justification for creating hygienic requirements for the font design of electronic educational publications for schoolchildren of this age category.

The article substantiates the urgency of the problem of forming healthy lifestyle skills in students of general educational organizations. The authors proceed from the recognition of the leading role of a healthy lifestyle in the system of factors affecting human health, as well as from the requirements of the Federal state educational standards for personal educational results in the field of preservation and promotion of health. This study is devoted to an integrated assessment of the subjective prerequisites for a healthy lifestyle in students of general educational organizations. The article presents the results of a survey of students regarding their relationship to a healthy lifestyle in dynamics over a three-year period. The statistical data on the subjective prerequisites of a healthy lifestyle — ideas, motivation, behavior, which together determine the attitude to a healthy lifestyle as an integral phenomenon, is analyzed. The authors emphasize the interconnection and mutual influence of the subjective prerequisites of healthy lifestyle on the formation of sustainable habits of health-preserving behavior. The method of comparative analysis revealed the contradictions between knowledge and motivation, knowledge and behavior, motivation and behavior. The subjective psychological prerequisites for a healthy lifestyle are not consistent and contradict each other, which negatively affects the formation of healthy lifestyle habits. The ideas about the requirements of a healthy lifestyle are largely socially desirable and reflect the cognitive patterns of a healthy lifestyle transmitted in the sociocultural environment of children. The value of one’s own health is not realized and is not lived, and, as a result, understanding the importance of health and a healthy lifestyle does not contribute to the consolidation of conscious, focused and sustainable health-preserving behavior.

The article presents the results of analysis of data from open sources and literature on the assessment of diets in preschool educational institutions in Moscow. It was found that for the period 2010–2015 and as of 2019, the change in food standards did not lead to a significant change in the quality of food and the number of basic food components, since the decrease in the norms of individual products is compensated by an increase in the norms of other products and the introduction of new products. However, problems in the field of catering in the DOE exist and are related, among other things, to the poor quality of outsourcing services by suppliers of ready meals and food products.

The article provides an overview of regional studies addressing the hygienic safety of recreational and drinking water use of the population of the Upper Don basin, conducted on the territory of the Voronezh region. The results of dissertation research for 1997–2019 and materials of modern scientific publications on the studied problem for 2015–2019, showing priority regional problems of water use of the population of the Upper Don Basin are considered. The data of scientific and practical work and state monitoring on the inconsistency of water quality with current standards in places of recreation at water bodies and drinking water of centralized water supply systems for sanitary and chemical indicators and microbiological safety indicators are presented. A description of the current system for monitoring the state of water resources is presented and attention is drawn to the need for its improvement.

The article presents the results of the relationship of Smoking in women with a history of obstetric (OAA). The study is based on the results of a survey of 107 smokers and 136 non-Smoking women observed in the antenatal clinic for pregnancy. The study found an increase in the number of miscarriages and abortions in Smoking women compared to non-smokers. Detection of Smoking women of fertile age when attached to outpatient clinics, active detection of Smoking pregnant women, as well as Smoking relatives in the family, carrying out measures to reduce Smoking significantly reduce the likelihood of having children with chronic pathology.