The aim: To determine the level of public awareness of COVID-19 and information needs, as well as level of public confidence in both official information on COVID-19 and to develop recommendations for communication policy on longer-term awareness in pandemic settings COVID-19, using principles of behavioral economics. Materials and methods: 4 focus group interviews were conducted in residents of Ukraine, with a total quantity of 48 people aged 16-70 years questioned and an anonymous questionnaire was conducted in 1,700 respondents, representing the adult population aged 18 years and older from all over Ukraine. The representative error of the study with probability of 0.95 does not exceed 4%. The processing of questionnaires was carried out by SDU Center of Social Researches (SDUCSR) employees, using the OSA program. Results: 28.5% of respondents believe that politicians and media underestimate the danger of the COVID-19 epidemic, while other 28.1% believe that politicians and media adequately assess its danger. 18.9% of respondents are sure that the danger is exaggerated. As much as 24.5% of Ukrainian respondents could not decide on such assessment. The most common sources of information about disease/treatment are Internet and social media. Traditional media and relatives/acquaints who endured the COVID-19 also gain population`s confidence. A family doctor is the least popular source of information. 42.1% of respondents do not trust official information on the number of infected people and severity of the disease, and another 40% are not sure whether they should trust or not. Only 17.9% of respondents trust official information. Conclusions: Within informing the society about public health in conditions of a COVID-19 pandemic it is better to provide communication strategy for various target audiences: for youth which is inclined to underestimate threats of epidemic and obtains information on social networks; for people of a retirement age (as risk group) who lack information because they use only traditional media (mainly TV); for women who need psychological support to decrease in level of stress in the family more often and also to overcome the negative post-stressful situations (connected with the death of the family/relatives); for men who are inclined to neglect their own health, etc.; for the people who have endured COVID-19 to prevent possible reinfection in them.

The aim: The work was aimed to study the histological, morphometric and planimetric features of skin regeneration in mature rats with chronic hyperglycemia under the influence of platelet-rich plasma. Materials and methods: 60 mature white laboratory rats were used. The animals were divided into three groups (I – control with mechanical skin injuries; II – rats with chronic hyperglycemia and modeled mechanical skin injuries; III – animals with the chronic hyperglycemia and modeled mechanical skin injuries which were injected with the platelet-rich plasma). The samples were studied using light microscopy.Statistical data processing was performed using SPSS-17. Results: On the 21st day, the epithelialization of control mature rats wound was almost complete. The epithelium contained all layers without pathological changes. The new dermis has been reorganized into papillary and reticular layers. On the 21st day, the wound of rats with chronic hyperglycemia was not completely covered with the epidermis. The connective tissue of the dermis was disorganized. On the 21st day, the wound epithelialization was also more complete in mature rats with chronic hyperglycemia received platelet-rich plasma compared to the rats with chronic hyperglycemia. The dermis contained a large number of blood vessels with normal, full-blooded lumens. Conclusions: The chronic hyperglycemia leads to disruption of epithelialization processes, angiogenesis, a delay in the reorganization of dermis connective tissue, and vascular remodeling. The injections of autologous platelet-rich plasma promote faster angiogenesis, reduce inflammation, and accelerate wound epithelialization.

Aim: To highlight the effect of using behavioral economics` methods, in particular, context and presentation of information that can influence behavior and choice of people in matters of healthy nutrition and disease prevention. Matherials and Methods: The structure of the study included: coverage of the main issues of healthy nutrition in population of Ukraine and application of behavioral economics` methods, which were developed on the basis of our research (method of social experiment) with subsequent statistical processing of data. Results: The absolute percentage of sales of dishes and drinks with green, yellow and red marking in cafeterias and canteens of Sumy State University at the initial stage, and after implementing of behavioral methods. The most significant changes occurred in sales of dishes with red labeling: it decreased by 20%; parallelly sales of green-labeled dishes increased significantly from 28% (before the experiment) up to 38% (after changing location compared to other dishes and using visual tips) and yellow-labeled dishes: the sales` index increased by 10%.Using of behavioral methods has also influenced the choice of drinks, but not significantly. Sales` index of “green” drinks during the experiment had increased by 4%, “yellow” – by 3%. Conclusions: Simple behavioral methods as changing the default options (change of location/layout) distribution of simple and meaningful information about nutrition, labeling can improve the diet choice of people by shifting it towards the healthier one, which, in turn, will lead to a significant reduction in prevalence of cardiovascular diseases, obesity and related diseases. Cooperation with health officials and politicians in further can lead to the spreading of healthier eating behavior in population without limiting individual choice of people.