Objective : The purpose of this study was to look at potential connections involving bacterial vaginosis detection in the first trimester and abortion at <20 weeks gestational. Study design: The microbiologic flora of the cervix was studied in 228 women (n = 228) who had a live singleton fetus at 14 weeks pregnant and received regular prenatal care in Al-Yarmouk Teaching Hospital , Baghdad ,Iraq. The three methods used to evaluate the infection were via microscopy (using clue cells), clinically (using the Amsel et al criteria), or by cultivating bacteria linked to bacterial vaginosis. Both unilateral (relative risk) and comprehensive analyses of the data were done. Results: A substantial correlation was found between the discovery of bacteria-related vaginosis at the initial prenatal visit and recurrent early pregnancy loss (relative risk: 5.4; 95% confidence interval: 2.5-11). Following a multivariate study, the microbes Salmonella hominis, Ureaplasma urealyticum, and bacteria that cause vaginosis were found to be related to a greater chance of premature delivery, but not other types of microbes. conclusion :Premature pregnancy termination and spontaneous abortion can both be caused by the parasites and vaginosis of bacteria.

Key words: Microorganisms, spontaneous abortion, early pregnancy loss, and infections caused by bacteria