Ali Jazayeri Moghadas - Dept. of Microbiology, Semnan University of Medical Sciences, Semnan, Iran
Gholamreza Irajian - Dept. of Microbiology, Iran University of Medical Sciences, Tehran, Iran

Background and Objectives: Urinary tract infection is one of the most common bacterial infections in the human population, and more frequent infection during pregnancy. With noticeto this point that most of urinary tract infections during pregnancy are asymptomatic, they could lead to serious complications such as prematurity, low-birth weight, hypertension, and higher fetal mortality rates if untreated. This study was aimed to determine the prevalence of asymptomaticbacteriuria, bacterial agents and their antibiotic susceptibility pattern in pregnant women attending Semnan public health centers during 2007-8. Patients and Methods: In this descriptive cross sectional study, pregnant women attending Semnan public health centers during May 2007 and June 2008 were investigated. Clean catch mid stream urine samples were collected and cultured on Eosin Metylene Blue agar and Blood agar bycalibrated loop method. Suspected colonies were identified, antibiotic susceptibility test was done. Results: Of 297 samples, 10 (3.3%) were positive for asymptomatic urinary tract infection. The dominant bacterial isolate was Escherichia coli (70%). The antibiotic susceptibility was observedto ciprofloxacin, ceftazidime and cefotaxime (80%), the most resistance was amoxicillin- clavulanicacid (90%). Conclusion: Frequency of asymptomatic UTI in pregnant women in this study is significantly lower than similar studies. Antibiotic susceptibility rate to using antibiotics do not show significant differences with most other studies.

Pregnancy, Urinary tract infection, Escherichia coli, Antimicrobial Agents