The aim of the study was to investigate the features of soil pollution in the sanitary protection zone of Novokuibyshevsk oil refinery and distribution of soil contaminants depending on the distance from the refinery. There were determined that the main contaminants are oil products, volatile phenols, some heavy metals. The content of oil products in soil was increased during 2014–2016. It was observed a decrease in the content of oil products with an increase in distance from 200 m to 1 000 m, but the all values were higher regional baseline content of these contaminants in soil.

The proportion of obese and overweight children is alarmingly high. This dictates the need for promoting healthy lifestyle and eating habits in children. Summer camps provide a wide range of activities to improve children’s health. However, methods used to assess children’s nutritional status during a camp session need to be analyzed in depth, and a rationale should be provided for the use of bioelectrical impedance analysis (BIA) and anthropometric measurements as efficacy criteria for summer camp healthcare. We examined 125 boys and 221 girls aged 8–15 years spending their summer holidays at 3 different camps. Measurements were taken twice: on days 1 and 2 upon arrival to a camp and 2 days before leaving for home. In each camp, both positive and negative health weight dynamics were observed. The overall weight dynamics in children from camps 1 and 2 were statistically insignificant (p = 0.415 and p = 0.585), in contrast to camp 3 where those changes were significant (p = 0.025). BIA revealed that less than 44.34% of children had gained skeletal muscle mass during their stay at the camp, whereas weight loss was associated with both decreased fat and skeletal muscle masses. BIA confirms the results of anthropometric measurements and also provides information about the diet offered to children and their level of physical activity. Therefore, the use of anthropometric measurements and BIA could be an informative method for assessing the efficacy of healthcare in summer camps.

Traditionally, anthropometric method is used in clinical practice for the diagnosis of excess body weight. Obesity is the excess development of primarily visceral and subcutaneous adipose tissue, which can be diagnosed by bioimpedance analysis (BIA). The study was aimed to assess the role of BIA of body composition in the diagnosis of the physical development disorders in children and adolescents. Anthropometric assessment and BIA were performed in 431 Samara school students aged 12–16 of the health status groups I and II (230 boys and 201 girls). The results were analyzed with the use of the regional regression scores, BAZ indices, and the body fat percentage values. The results of estimation using the regression scores showed that 22.61% of boys and 23.43% of girls were overweight, while more than 2/3 of the sample had a normal pattern of physical development. The BAZ indices revealed a significantly higher proportion of overweight children among boys (25.7%), than among girls (11.5%, p < 0.01). The body fat percentage fluctuations based on the BIA data were found not only in children with disharmonious physical development, but also in 60% of children with normal body weight. Moreover, the data of BIA confirmed the body weight fluctuations, revealed with the use of the regression scores, in the significantly larger number of cases compared to the low body weight and excess body weight, diagnosed based on the BAZ indices. Accordingly, anthropometric analysis with the use of the regional regression scores may be used at the baseline for the early diagnosis of the nutritional status disorders in children. To confirm overweight and obesity in children, as well as to provide further treatment, the reliable method for estimation of the body fat content is required, which may be the method of BIA.

At present, one of the main tasks of the state and society is preservation and strengthening of the health of the able-bodied population. Employees of medical organizations are exposed to the combined effects of a significant number of harmful production and professional factors. In particular, the factors of the working environment include biological, chemical, and physical factors, while those of the labor process involve tension and severity. Therefore, the study of working conditions of medical personnel is a priority in occupational health. The purpose of the study is to analyze the working conditions of employees of medical organizations and iden tify priority production-related and occupational pathologies arising from the impact of unfavorable production and occupational factors in order to develop preventive measures. Materials and methods. The object of the study was 1,443 reports of the special assessment of working conditions. We carried out our own studies of the parameters of the microclimate and lighting in the premises: the number of measurements was 5,398, measurements were carried out in 60 premises of medical organizations, and 727 air samples were taken to determine the microbial load. Results. According to the studies of the conditions and nature of work at the workplaces of medical workers in the examined medical organizations and according to the results of a special assessment of working conditions and our own research, the conditions corresponded to a harmful class of 1–3 degrees and of the 4th degree for workers of the oncological hospital. The level of maximum microbial load in the doctors' lounges and nursing rooms increased by the middle of the work shift and remained high until the end of the working day. Since the air movement speed in the studied rooms was very low, this criterion may be a risk factor for aggravation of the course of general somatic pathologies and, as a result, the development of work-related morbidity in medical workers. It can also be noted that fungi were found in 100 % of samples, with their number decreasing by the end of the work shift, while the number of the genus Staphylococcus representatives, on the contrary, tended to increase by the end of the working day. Conclusion. According to the results of the special assessment of working conditions, the conditions and nature of the labor of medical workers in the studied medical organizations corresponded to the harmful class of 1–4 degrees. The 4th degree of the 3rd class of working conditions was due to the personnel’s work with cytostatic drugs. Microclimatic parameters corresponded to hygienic standards (at low air speeds). Fungi and representatives of the genus Staphylococcus were found in 100 % of air samples. A detailed study of the species identification of micromycetes in the indoor air showed that the number of Penicillium and Aspergillus micromycetes significantly exceeded the number of other species.

The purpose of the study was to monitor the quality of drinking water supply in Samara. The quality of drinking water was evaluated in 7 districts of Samara on the basis of 20 sanitary-chemical indicators in accordance with health and safety norms and regulations (SanPiN 2.1.4.107401 20102013 and 20182019). A changed color of drinking water was mainly observed in the areas with water supply from the Saratov reservoir (53,5 8,5% of samples). In the areas with underground water sources the dry residue and hardness of drinking water exceeded hygiene requirements by 100% and 87,5% of samples respectively. 64% of samples in 20102013 and 17,4% of samples in 20182019 were non-standard in terms of permanganate oxidation. Several samples didnt meet the hygienic standard for iron content. Adverse changes in the temporal dynamics of the proportion of samples that didnt meet the hygienic standard for the content of oil products were noted. The quality of some samples of drinking water in Samara did not meet sanitary requirements for some indicators. No significant differences were found between the average long-term values of sanitary and hygienic indicators for urban areas and the obtained data for drinking water in the new housing estate, which suggests that the condition of the water supply pipes doesnt influence the composition of the drinking water in the yard or at home.