[frequency of colonization of beta-hemolytic group b streptococci in a sample of 939 pregnant women. epidemiologic and clinical study].a prospective study of group b streptococcus colonization in 939 pregnant women from vicenza and its region, disclosed an overall rate of 9.58% of genital colonization. only two cases of group b streptococcal infant disease occurred in the study period (0.21%). no statistically significant difference between culture-positive and culture-negative pregnant women was found in mean age, parity, place of residence, blood group, presence of clinical disease during pregnancy, type of delivery and gesta ...19846398425
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