remains the most frequent transfusion-transmitted viral infection; thus, the term occulthepatitis B virus infection (OBI) was introduced. OBI is simply defined as serologically undetectable hepatitis Bsurface antigen (HBsAg-ve), despite the presence of circulating HBV DNA with or without the presence of HBVantibodies.GoalTo determine the prevalence of occult hepatitis B among blood donors and evaluate the presence of HBV DNAin HBsAg negative plasma samples.Materials and MethodsIt includes 16700 samples which donated in NCTM in Ulaanbaatar in 2013. We used to “triplex” PCR assay thatincluded the detect of hepatitis B virus HBV-DNA in addition HCV-RNA and HIV1/2-RNA for whom with absenceof serological markers of infection. The studies used molecular biology methods were performed with the help ofequipment (ROCHE COBAS S 201) and technology based on Real Time PCR (pool size: 6 donation) Then wechoose HBsAg negative, DNA positive samples and determined, anti-HBc and anti-HBs by serological methods,of ELISA Wantai HBc and HBs 3.0 tests.ResultsThe 14948 samples were detected serological negative in the total of 16700 samples. PCR test results show 35(0.23%) positive by HBV-DNA 29 (82.9%) of the 35 DNA positive blood donors were alone anti-HBc positive and3 (8.6 %) were anti-HBs, anti-HBc positive. 7(17.1%) were seronegative. Of the 35 OBI cases, 28 (80%) weredetected the first time they were screened for HBV DNA while 7 (20%) gave one more HBV PCR-nonreactiveresults before detection. Callback studies we determined 2 cases were pre-HBsAg window period.Conclusion:The prevalence of HBV DNA positive in HBsAg negative blood donors is found 0.2%. HBV NAT needs eitherextreme sensitivity or to be performed on individual donations to eliminate HBV DNA-containing units.

Background. Most people infected with Cytomegalovirus (CMV) have no signs or symptoms, but newborns andpeople with weakened immune systems are more at risk of developing signs and symptoms. CMV remains in thebody throughout a lifetime. Infected people may spread infection.Goal. The main aim of this study is to determine the prevalence of infection of cytomegalovirus (CMV) by enzymeimmunosorbent assay.Materials and Methods. In this study included subjects, age range of 17-60 years (total of 716) blood donorswho were served by the National center for transfusion medicine. Screening for Cytomegalovirus CMV IgG andIgM specific antibody concentrations determined using DIALAB ELIZA kits.Results. CMV-specific IgG antibodies were detected in 99.2% (710) of the studied subjects and, specific IgMantibodies in 0.1% (1). IgG antibodies positive individuals are compared to 4 blood groups and (p = 0.01) differencewas not statistically significant. IgG antibodies negative 6 individuals are included all in blood type B(III). IgMspecific antibodies positive (1) individual was in the age group 26-40 years, female and type of regular donor.Conclusion. We can conclude from our results of the determination of CMV IgG and IgM specific antibodiesshows that a number of risks of transfusion transmitted infection cytomegalovirus.

Introduction: The World Health Organization describes poor adherence as the most important cause of uncontrolled blood pressure and estimates that 50–70% of people do not take their antihypertensive medication as prescribed.Goal was to measure non-adherence to antihypertensive therapy in a representative sample of the hypertensive Mongolian population and to define the factors associated with non-adherence in the studied population.Materials and Methods:This descriptive study was a questionnaire-based cross sectional analysis. A simple random sample of 735 hypertensive patients, aged 35-64 years was selected. The questionnaire included sociodemographic characteristics and awareness about hypertension and anti-hypertensive treatment, and factors that encouraged or discouraged the patient’s drug taking behavior. Adherence was assessed using the Morisky Medication Adherence Scale (MMAS), with a 4-item questionnaire. Blood pressure was measured twice by the physicians using aneroid sphygmomanometers and stethoscopes. Results and Discussion: The study sample consisted of 265 men (36.1%) and 470 women (63.9%). The mean age of participants was 53.8 ± 8.7 years. The non adherence to medical treatment found in the our study was 68.3% of hypertensive patients. We found younger age (35-44), low family income, not having a regular doctor towards hypertension control, behaviour not taking drug regularly, monotherapy and lack of patient’s knowledge to be the significantly factors influencing on non-adherence to anti-hypertensive medication among Mongolian hypertensive population. The non adherence to antihypertensive treatment found in the current study was higher than that of 25.9%-55.8% found in the study done in Malaysia, Pakistan and Egypt and lower than what a study in the Bangladesh , India and Brazil (74.2%-90.0%)population.Conclusion: The level of adherence to treatment among the participants in this study seriously needs to be improved through well designed health promotion and education strategies in order to prevent poor treatment outcomes.