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Korean Journal of Obstetrics & Gynecology 1999;42(9):2038-2042.
Published online January 1, 2001.
A Study of Group B Streptococcal Infection in Korean Pregnant Women.
Lee Suk Park, Kyung Seo, Sei Kwang Kim, Yong Won Park, Hyun Yong Jung, Yun Sop Chong, Kyung Won Lee
To evaluate the degree of streptococcal colonization in Korean pregnant women. METHODS: The study comprised of 153 singleton pregnant women who visited Severance Hospital for delivery, and their neonates. Specimens for GBS culture were collected by a sterile cotton swab from lower vagina and cervix of pregnant women, and from ear canal and throat of neonates. They were first cultured for 48 hours in Todd-Hewitt broth and then subcultured onto Tryptose blood agar plates(Difco). Group B streptococci were confirmed by the presence of beta-hemolysis and a positive reaction with Phadebact group B Streptococci reagent(Karo Biodiagnostics AB, Huddinge, Sweden). RESULTS: The prevalence of positive cultures in pregnant women and neonates were 2.61%(4/153) and 0%(0/4), respectively. In the study population there was a case of suspicious group B streptococcual sepsis in an infant whose mother was colonized. CONCLUSIONS: In our study the GBS colonization rate in Korean pregnant women was significantly lower than that of other countries. The reason for this difference may be associated with a racial differences, or social factors such as socio-economic status or a life style.
Key Words: Group B Streptococcus(GBS), pregnancy, colonization, B

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