[Group B streptococcus screening: a retrospective study in 1,674 pregnancies]. / Dépistage du streptocoque de groupe B pendant la grossesse: a propos de 1 674 prélèvements.

ABSTRACT

OBJECTIVE: To evaluate our clinical practice for Group B streptococcus (GBS) screening during pregnancy and antibiotic therapy during delivery. MATERIAL AND METHODS: We performed a retrospective evaluation of our SBS screening protocol, by vaginal swab, for a period of two years, including 1,674 asymptotic patients. Intra partum antibiotic prophylaxis was administrated for GBS-positive women. RESULTS: The rate of GBS carriage was 6.9%. Antibiotics were administrated for 79.3% patients with GBS-positive culture. Of these women only 39% had an interval greater than four hours between antibiotic injection and delivery. In the group of patients with positive GBS culture, no newborn was infected and only 5% were colonised. In the GBS-negative group with 1.3% of the newborns were GBS positive. CONCLUSION: We were surprised by our low rate of GBS carriage and the non optimal application of antibiotics during labor. We reviewed our results with all our team and a prospective evaluation has been initiated.