The prevalence of streptococcus agalactiae (Group B) colonization in pregnant women at Thammasat Hospital

Background: Group B Streptococci (GBS) is responsible for serious infections in newborns such as septicemia and meningitis. Objective: The present study was carried out to find the prevalence of GBS colonization in pregnant women and to determine the pattern of antibiotic resistance of the isolates. Material and Method: From November 2004 to February 2005, 406 pregnant women were examined for GBS. Results: GBS colonization rate was 16% in pregnant women, receiving antenatal care at Thammasat Hospital. Conclusion: All the isolates were sensitive to Ampicillin, Penicillin, Vancomycin and Cephazolin. Resistant was seen with Clindamycin (3%) and Erythromicin (1.5%).