Group B Streptococcal colonization in 160 mother-baby pairs: A prospective cohort study

Methods. aEuro integral In prospective, cohort study, 167 infants born to 167 GBS culture-positive mothers without additional risk factors were enrolled. Cultures were collected both, at 10--24 h after birth (admission) and at discharge. Results. aEuro integral Among 137 infants born to mothers who received inadequate prophylaxis, 5 (3.6%%, C.I. == 0.5--6.8) were colonized (>= a parts per thousand yen1 sites) at admission, at discharge, or both, at admission and discharge. Eighty-two women received prophylaxis < 2 h before delivery and two infants (2.4%%) were colonized at discharge. Eighteen (60.0%%, C.I. == 42.5--77.5) of 30 infants who were not exposed to prophylaxis were colonized at admission or both, at admission and discharge. Colonization was significantly more frequent among infants born to untreated mothers with respect to infants born to women who received inadequate prophylaxis (either < 2 or < 4 h). Conclusions. aEuro integral In this selected group, inadequate prophylaxis significantly interrupted vertical colonization. This effect was evident even if prophylaxis started < 2 h before delivery.