Tehran University of Medical Sciences Iranian Journal of Microbiology 2008-3289 10 3 2018 07 15 166 170 EN Amjad Ahmadi Social Determinants of Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran AND Department of Microbiology, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran Fariba Farhadifar Social Determinants of Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran AND Department of Obstetrics & Gynecology, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran Masoome Rezaii Department of Obstetrics & Gynecology, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran Farnaz Zandvakili Department of Obstetrics & Gynecology, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran Fariba Seyedoshohadaei Department of Obstetrics & Gynecology, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran Mozhdeh Zarei Department of Obstetrics & Gynecology, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran Sholeh Shahgheibi Department of Obstetrics & Gynecology, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran Rashid Ramazanzadeh Department of Microbiology, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran AND Cellular and Molecular Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran Daem Roshani Social Determinants of Health Research Center, Research Institute for Health Development, Kurdistan 2017 12 09 Background and Objectives: Group B Streptococcali (GBS) is an important factor in newborn deaths in developed and developing countries. Trichomoniasis is one of the most prevalent sexually transmitted diseases (STDs) in the world, which is caused by protozoan Trichomonas vaginalis (T. vaginalis). The present study compares the frequency of GBS and T. vaginalis genital infections in pregnant women, women with spontaneous abortion, as well as its role in spontaneous abortion. Materials and Methods: In this case-control study, 109 women were included with spontaneous abortion with gestational ages between 11-20 weeks and 109 pregnant women with gestational ages between 35-37 weeks in Sanandaj, Iran. DNA was extracted by endocervical swabs and subjected to PCR assays. The independent t-test was used; and for comparing other qualitative variables in each group, the Chi-Square Test was used. Results: The age of the women ranged from 19-43 years (29.6 ± 5.9) and in the control group the age range was from 19-42 years (27.8 ± 4.87). The rate of prevalence of Group B Streptococcal infection in the control group was 3.6%; and in the patient group there were 7.2% with the rate of prevalence of T. vaginalis in both groups as zero. Conclusion: The present study showed that there is no relationship between GBS infections (P-value = 0.235) and T. vaginalis. https://ijm.tums.ac.ir/index.php/ijm/article/view/1577 https://ijm.tums.ac.ir/index.php/ijm/article/download/1577/807