Association of Intrapartum Antibiotic Exposure and Late-Onset Serious Bacterial Infections in Infants

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Abstract
Objective. Recommendations to prevent vertical transmission of group B Streptococcus (GBS) infections have resulted in many women's receiving antibiotics during labor with an associated reduction in early-onset GBS infections in their newborn infants. However, a potential relationship of intrapartum antibiotics (IPA) to the occurrence of late-onset (7–90 days) serious bacterial infections (SBIs) in term infants has not been reported. The objectives of this study were to determine whether infants with late-onset SBI were more likely than healthy control infants to have been exposed to IPA and whether there was a greater likelihood of antibiotic resistance in bacteria that were isolated from infants who had an SBI and had been exposed to IPA compared with those who had not.