Current guidelines recommend universal collection of a vaginal-rectal swab for GBS colonization at 36-37 weeks and 6 days for the identification of patients who require intrapartum IV antibiotic coverage to prevent early onset neonatal GBS infection/sepsis. Recently, we had a patient in clinic whose GBS culture at 36 weeks was negative. Good right? Well, the patient was on amoxicillin at the time for pharyngitis. Did that course of oral PCN based therapy affect the GBS culture result? Should we believe that culture or could it be a false negative, demanding rescreen after therapy completion? There is currently a GAP here in the guidance. In this episode we will cover this controversial scenario, look at the data, and provide a real-world implementable approach to this case.

1. Kim DD, Page SM, McKenna DS, Kim CM. Neonatal Group B Streptococ ...