| prevalence and significance of group b streptococcus in a large obstetric population. | between jan. 1 and dec. 31, 1985, vaginal swabs were obtained for culture for group b beta-hemolytic streptococcus (gbs) from 3078 women admitted for labour and delivery to regina general hospital. seventy-one women had positive results; thus, the colonization rate was only 2.3%. the charts of the 71 women and their 73 babies were analysed. of the 58 babies from whom swabs were obtained, 20 had gbs at one or more sites; the transmission rate was therefore 34%. early-onset gbs disease developed i ... | 1987 | 3300923 |