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Introduction: The prevalence of maternal group-B-streptococcus (GBS) colonization and risk factors (RFs) for neonatal early-onset disease (EOD) in Europe are poorly defined. Large-scale information concerning adherence to recommendations for preventing GBS-EOD are lacking.Materials and Methods: This was a 3-month retrospective area-based study including all regional deliveries  ≥35 weeks' gestation (in 2012). The sensitivity, specificity, positive and negative predictive values, odds ratio and receiver operating characteristic (ROC) curve for intrapartum antibiotic prophylaxis (IAP) among full-term and preterm deliveries and prolonged membrane rupture (PROM) were calculated.Results: Among 7133 women, 259 (3.6%) were preterm (35-36 weeks' gestation). Full-term women were 6874, and 876 (12.7%) had at least 1 RF. Most women (6495) had prenatal screening and 21.4% (1390) were GBS positive. IAP was given to 2369 (33.2%) women (preterm, n = 166; full term, n = 2203). Compared to full-term, preterm women were less likely to receive IAP when indicated (73.2% versus 90.3%, p < 0.01). Full-term women represented the largest area under the curve (AUC, 0.87). PROM showed the highest sensitivity (98.6%), but the lowest specificity (6.9%) and AUC (0.53).Conclusions: Large-scale prenatal screening and IAP are feasible. Women delivering preterm are less likely to receive IAP when indicated. Most unnecessary antibiotics are given in cases of PROM. [ABSTRACT FROM AUTHOR]

Background Group B streptococcus (GBS) is a leading cause of severe infections in newborns. Intrapartum antibiotic chemoprophylaxis (IAP) reduces the rate of early-onset disease. The aim of this study is to determine the degree of clinicians' compliance with the suggested protocol for GBS prevention in Emilia-Romagna (Italy). Methods Characteristics of each delivery were prospectively recorded in the period between October 2005 to December 2005. Standardized pro-forma were used to collect data. Results Among 5118 babies, 7.2% (369) were preterm and 92.3% were born at term (4749). Antenatal screening was performed in 86.6% of women who delivered at term, of which 18.1% were GBS culture-positive. Information regarding culture site was available in 93.2% of women screened and recto-vaginal cultures were documented in 42.7%. IAP was administered to 28.7% of 3937 women at term who had either spontaneous delivery or emergency caesarean section. In this cohort, 15.9% were diagnosed GBS culture-positive, of which 92.6% received IAP. Prophylaxis was also administered to 8.4% (331) of women for no apparent reason. Compared with tertiary level hospitals, women delivering in primary/secondary hospitals were more likely to be both GBS screened (P < 0.0001; OR 3.04; CI 2.33-3.97) and to receive prophylaxis ≥4 hours before delivery (P = 0.0025; OR 1.57; CI 1.17-2.12). Conclusions GBS screening was performed in >85% of women and >90% of culture-positive women received prophylaxis. However, there is a need to educate clinicians about protocol adherence, as most cultures were suboptimal and cases of unnecessary IAP were administered. The screening was more effective in hospitals with fewer deliveries. [ABSTRACT FROM AUTHOR]