Higher body mass index after intrapartum antibiotic exposure in children persists over 10‐years

Exposure to intrapartum antibiotic prophylaxis to reduce perinatal group B streptococcal disease was associated with increased childhood body mass index (BMI) persisting to age 10 years compared to no exposure (Δ BMI at 10 years: vaginal delivery 0.14 kg/m² , caesarean 0.40 kg/m² ).