Early-onset group B (EOGBS) infection subsequent to cessation of screening-based intrapartum prophylaxis: findings of an observational study in West London, UK.

Objectives: To describe the impact on early-onset group B (EOGBS) infection rates following reversion from screening-based to risk-based intrapartum antimicrobial prophylaxis (IAP) for prevention.

Setting: Maternity services provided by secondary healthcare organisation in North West London.

Participants: All women who gave birth in the healthcare organisation between April 2016 and March 2017.