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Background: The presented article explores the possibilities of effective health protection of university students. The authors believe that an important task for university management is to preserve the health of students in the learning process among the various problems of training professional personnel necessary for the economy and management. Objective: The purpose of this study is to develop a set of effective organizational and legal measures to preserve the health of university students. Methods: To do this, the authors investigate the trends in the state of health of modern students, its determining factors, the most common diseases characteristic of this social group, and the reasons for their spread. Results: The authors suggest organizational and legal solutions to the problem of preserving the health of students. The world experience of organizing and conducting health-saving and health-related activities is studied, and its comparison with the Russian experience is carried out. Special attention in the presented scientific research is paid to proving the necessity of organizing physical education of students as the main type of morbidity prevention. Conclusion: Conclusions are drawn about the need to develop, adopt, and implement health-saving and health-related programs. Measures are proposed to improve the health of students.

Since the 90s'Retrospective AE case finding was carried out at main multi-profile medical centers equipped with the modern diagnostic means. The medical records of all patients with liver surgery admitted between January 2008 and June 2020 were reviewed. A specific form was developed in EpiInfo v.7.2. Annual national incidence was estimated using population denominators provided by the National Institute of Statistics.Overall, 11 AE cases have been identified. All patients were diagnosed at advanced stages, with subsequent poor prognosis and costly treatment. Confirmation was based on tissue biopsy and medical imaging results. Age ranged from 12 to 58 years with a median of 33 yrs. Patients were from rural communities, mostly in the Gegharkunik region (6 cases, 55%). Annual average incidence of AE was 0.033/100,000 varying between 0.032 in 2008 and 0.1 in 2017.There are human AE cases happening in Armenia since more a decade ago. In the absence of an AE surveillance system, the burden of AE disease is difficult to estimate. Development of national AE guidelines with a case definition should help enforcing registry of all cases, early diagnosis and also clinical and public awareness.

Background Since the 90s' E.multilocularis infection in foxes is rising and central-eastern European countries had seen first Alveolar echinococcosis (AE) human cases. AE is considered to be a very rare disease in Europe with average incidences of 0.03-0.20/100,000 inhabitants/year. Because of a suitable orography, this study aims to confirm whether there are human AE cases in Armenia, identify areas at risk, and also estimate AE annual incidence. Methods Retrospective AE case finding was carried out at main 6 multi-profile medical centers equipped with the most innovative diagnostic means. The medical records of all patients with liver surgery admitted between January 2008 and June 2020 were reviewed. A specific form was developed in EpiInfo v. 7.2. Annual national incidence was estimated using population denominators provided by the National Institute of Statistics (the population of Armenia is estimated at 2 963 243 people). Results From September 2019 until June 2020, overall 11 AE cases have been identified. All patients were diagnosed at advanced stages, with subsequent poor prognosis and costly treatment. Confirmation was based on tissue biopsy results. Age ranged from 19-59 years with a median of 39yrs. E. multilocularis was detected in rural communities, mostly in the Gegharkunik region (6 cases, 55%). Annual average incidence of AE was 0.033 varying between 0.032 in 2008 and 0.1 in 2017. For comparison with Armenia, an annual incidence in France was 0.026/100,000 in 2008 (the population of France is estimated at 65 273 511 people). Conclusions All cases were not notified by the surveillance system and the real prevalence of AE in the country is unknown. This young age could indicate widespread of infection in animals. Therefore, the burden of AE disease is difficult to estimate. The surveillance system in Armenia can be improved by the development of national guidelines for the prospective registry, AE awareness campaigns. Key messages First-time identification of human AE in Armenia calls for implementation of surveillance with a case definition and registry of all cases. AE is an emerging, and so far silent threat in Armenia.

Escherichia coli anaerobically ferment glucose and perform proton/potassium exchange at pH 7.5. The role of hyf (hydrogenase 4) subunits (HyfBDF) in sensing different concentrations of glucose (2 g L

Hydrogen (H2)-producing hydrogenase (Hyd) activity of E. coli wild type and mutants with defects in subunits of Hyd-3 or Hyd-4 during fermentation at different glucose concentrations and pHs was studied. Hyd-3 was mainly responsible for H2 production but a significant contribution by Hyd-4 to total H2 production depended on the glucose concentration and pH. Surprisingly, not all Hyd-3 or Hyd-4 subunits contributed towards H2 production. Hyd-4 mainly exhibited H2-oxidizing activity in cells growing on 0.2% glucose at pH 7.5, while at pH 5.5 it had a significant impact on H2 production. Importantly, a hyfG mutant (lacking the large subunit of Hyd-4) had a ~2.2 fold decrease in H2 production when cells were grown with 0.2% glucose. A similar role of Hyd-4 was shown at pH 6.5 grown with 0.8% glucose. This study provides new information to allow improvements in H2 production yield and in our general understanding of H2 metabolism.

s. Shade matching is one of the most important factor in a successful and esthetically restoration. The number of mistakes made by dentists when choosing a color is 14 % (according to Barna), 9.9 % (according to Moser) and 8.2 % (according to Mc Maugh). The ability to consistently match shades accurately can help reduce the number of unsatisfactory esthetic results treatment. Matching the right color leads to a pleasing appearance and satisfaction for the patient and the clinician. Color determination in dentistry can be divided into two categories visual and instrumental. The most popular shade guides include visual classical shade the Vita Classical and are clustered into letter groups A (red-yellow), B (yellow), C (grey), D (red-yellow-gray), and chroma designated with the numerical values (e.g. A1). Used computerassisted shade analysis is more accurate and more consistent compared with human shade assessment. The objective of the study a comparative assess of the esthetic indicators of the prosthodontics treatment when determining color using visual and instrumental methods. For the period from 2015–2020 prosthodontic treatment of 158 patients with dental defects was performed. To assess the esthetic results of treatment, the patient was divided into 2 groups. In 1 group (n = 82) patients, the color determination of the prosthodontics design was carried out using standard colors according to the usual VITA scale. In 2 group (n = 76) patients, the color determination of the prosthodontics design was carried out using a color measuring device VITA Easy shade Compact. The results showed that the Vita Easy Shade machine was accurate 97.5 %, visual evaluation method was accurate 85.2 %. This study reveals that esthetic results is a significant factor in patient satisfaction, which should be evaluated. Instrumental methods for determining the color of teeth are more accurate than visual and do not depend on the subjective sensations and psychological factors of the dentist. At the moment, the combination of the Vita Easy shade system and the 3D Vita scale is the most effective in determining tooth shade or restoration. However, the instrumental method cannot replace traditional methods. Digital techniques should be a must in addition to visual analysis.

A retrospective analysis was conducted of human cases and outbreaks of tularemia in the Republic of Armenia from 1996 to 2012 utilizing geographic information system software. A total of 266 human cases of tularemia were recorded in Armenia from 1996 to 2012, with yearly incidence ranging from 0 to 5.5 cases per 100,000 people. Cases predominantly affected the male population (62.8%), 11–20 year age group (37.2%), agricultural workers (49.6%), and persons residing in rural areas (93.6%). In 2003, a waterborne outbreak involving 158 cases occurred in Kotayk Marz, and in 2007, a foodborne outbreak with 17 cases occurred in Gegharkunik Marz, attributed to exposure of food products to contaminated hay. Geospatial analysis of all cases showed that the majority were associated with the steppe vegetation zone, elevations between 1,400 and 2,300 m, and the climate zone associated with dry, warm summers, and cold winters. Characterization of these environmental factors were used to develop a predictive risk model to improve surveillance and outbreak response for tularemia in Armenia.

After brewing roasted coffee, spent coffee grounds (SCGs) are generated being one of the daily wastes emerging in dominant countries with high rate and big quantity. Escherichia coli BW25113 wild-type strain, mutants with defects in hydrogen (H2)-producing/oxidizing four hydrogenases (Hyd) (ΔhyaB ΔhybC, ΔhycE, ΔhyfG) and septuple mutant (ΔhyaB ΔhybC ΔhycA ΔfdoG ΔldhA ΔfrdC ΔaceE) were investigated by measuring change of external pH, bacterial growth and H2 production during the utilization of SCG hydrolysate. In wild type, H2 was produced with rate of 1.28 mL H2 (g sugar)−1 h−1 yielding 30.7 mL H2 (g sugar)−1 or 2.75 L (kg SCG)−1 during 24 h. In septuple mutant, H2 production yield was 72 mL H2 (g sugar)−1 with rate of 3 mL H2 (g sugar)−1 h−1. H2 generation was absent in hycE single mutant showing the main role of Hyd-3 in H2 production. During utilization of SCG wild type, specific growth rate was 0.72 ± 0.01 h−1 with biomass yield of 0.3 g L−1. Genetic modifications and control of external parameters during growth could lead to prolonged and enhanced microbiological H2 production by organic wastes, which will aid more efficiently global sustainable energy needs resulting in diversification of mobile and fixed energy sources.

BACKGROUND The Republic of Armenia was 1 of the 2 earliest countries in the Newly Independent States to introduce rotavirus vaccine into its national immunization program to reduce the burden of rotavirus disease (documented to cause 38% of acute gastroenteritis hospitalizations [AGE] among children aged

Additional file 1. Milestones of National Malaria Programme of the Republic of Armenia.

Objective The goal of this study was to identify gaps in the severe acute respiratory infection sentinel surveillance system at Surb Astvatsamayr Medical Center. Introduction Influenza is a priority in Armenia. There are two influenza surveillance systems in Armenia: population and sentinel. The medical center (MC) has been included in sentinel surveillance since 2012. In 2015 a study was undertaken to identify gaps in severe acute respiratory infection (SARI) sentinel surveillance system in Surb Astvatsamayr MC. Methods Medical records and reporting forms of SARI cases were generated for individuals meeting the case definition and analyzed for age groups, risk factors, sentinel surveillance detection methods, laboratory conformation, number of days hospitalized and reporting. Results In 2014, 3016 patients were admitted in the hospital with ARI, of whom 2982 were younger than 18 years. During the 2014-2015 influenza season (week 40, 2014-week 20, 2015), 77 swabs have been taken in total, of which five were influenza positive (4 B and 1 AH1N1). Also in the 2013-2014 influenza season, five samples tested positive (all influenza A). Sixty-one (48%) patients with respiratory disease met the WHO SARI case definition (2011), 84 (66%) of all reviewed patients would have met the SARI case definition. The numbers for the ICU (25 records reviewed) do not reflect the actual percentage of patients admitted with respiratory symptoms. The 33 additional cases taken from the sampling logbook were mainly hospitalized in the ICU. Influenza tests were performed on 34 patients (mainly ICU), five were positive for influenza (four B--all adults—and one AH1N1), and four tested positives for other respiratory pathogens (two RSV, one RV, one BV). All influenza positives had fever or a history of fever and 80% met the WHO SARI case definition (2011). Non-sampled cases generally have fewer reported symptoms, but still 44% of cases fits the WHO SARI case definition (2011). Conclusions The percentages of patients meeting the WHO SARI 2011 case definition and the WHO SARI 2014 definition shows that mainly caused by the absence of shortness of breath in the SARI 2014 definition 52% (2011) vs 66% (2014) in Surb Asvatsamayr. A large number of children from Neonatal and Children’s departments fulfil the SARI case definition and could potentially be swabbed in addition to ICU patients. There are gaps in WHO SARI case definitions. The sentinel surveillance system should be improved.

Pneumonia and diarrhea are the leading causes of child morbidity and mortality globally and are vaccine preventable. The WHO-coordinated Global Rotavirus and Invasive Bacterial Vaccine-Preventable Disease Surveillance Networks support surveillance systems across WHO regions to provide burden of disease data for countries to make evidence-based decisions about introducing vaccines and to demonstrate the impact of vaccines on disease burden. These surveillance networks help fill the gaps in data in low and middle-income countries where disease burden and risk are high but support to sustain surveillance activities and generate data is low. Through a series of country case studies, this paper reviews the successful use of surveillance data for disease caused by pneumococcus and rotavirus in informing national vaccine policy in Bangladesh, Armenia and The Gambia. The case studies delve into ways in which countries are leveraging and building capacity in existing surveillance infrastructure to monitor other diseases of concern in the country. Local institutions have been identified to play a critical role in making surveillance data available to policymakers. We recommend that countries review local or regional surveillance data in making vaccine policy decisions. Documenting use of surveillance activities can be used as advocacy tools to convince governments and external funders to invest in surveillance and make it a priority immunization activity.

Background: The poor ovarian response (POR) to ovarian stimulation significantly decreases the efficiency of assisted reproduction technologies. The genesis of POR is not well understood, and can result from various genetic and immune factors.Purpose: To determine the role of genetic (number of CGG repeats in the FMR1-gene) and autoimmune factors (anti-ovarian antibodies) in POR in IVF programs.Methods: In a cross-sectional study, 150 infertile women were divided into the POR group (n = 65) and the group with a normal ovarian response (n = 85). All the patients underwent the detection of CGG repeats in the FMR1-gene by polymerase chain reaction, serum anti-zona pellucida antibodies (AZPA) and anti-ovarian antibodies by enzyme-linked immunosorbent assay.Results: The risk of POR was higher in patients with CGG counts > 34, but not in the patients with CGG counts 34 CGG repeats.Conc...

Objective In the spring of 2014, people from vulnerable households in all marzes of Armenia were examined with the aim of active surveillance. Introduction Brucellosis is a serious disease caused by bacteria of the Brucella genus. It principally affects ruminants but may be transmitted to humans. Registration of cases in cattle farms causes considerable economic losses and creates favorable conditions for mass infection among humans. In Armenia the expansion of animal industries and urbanization are the main reasons for occurrence and development of brucellosis. Methods Blood was sampled from people on farms reported as having infected animals. Blood samples were tested by the Wright- Huddleston method. The standard case definition of brucellosis was used for diagnosis. A questionnaire-based interview was carried out among the population to identify the form of contact with animals and to analyze epidemiological links. During the investigation provisions were followed in governmental decree RA 19.01.2006 N480-N and brucellosis prevention, epidemiology, diagnosis, treatment, preventive measures. Results A total of 11160 people from 1054 households were enrolled in the study, of which 3625 (32.5%) underwent a laboratory examination. Nearly 6% (641) refused to be tested. Over 6% of those tested (226) were positive for antibodies to Brucellae. Of these, 129 (3.5%) had chronic brucellosis. Those testing positive for brucellosis were treated appropriately. These included 203 (90%) adults and 23 (10%) below 14 years old; 147 (65%) were male and 79 (35%) were female. Of those diagnosed with brucellosis, working in animal husbandry accounted for 46.6% (106), while those who harvested milk accounted for 37.6% (85) and those using raw milk made up 15.4% (35). Conclusions Cases were most frequently reported among people 20-55 years of age; the highest percentage of positives were among 41-45 year old males who had contact with infected animals. The main risk factor for acquiring brucellosis is animal husbandry.

Ovarian stimulation protocol and other potential risk factors of poor ovarian response (POR) were analyzed in retrospective case-control study. Due to ESHRE criteria (2011) 150 infertile women of IVF department were divided into the group of cases with POR and the control group with the normal ovarian response. The elder age of the women and the earlier age of menopause in their mothers seemed to be the significant risk factors of POR. Also POR was associated with the history of abortions, ovarian stimulation, and hormonal contraception. Ovarian stimulation protocol did not influence the number of follicles and oocytes in both case and control groups. The pregnancy rate was higher in patients with GnRH antagonists protocol.