The slideset is an overview on lessons learnt from maternal colonization epidemiology studies focused on:
- Association of maternal recto-vaginal GBS colonization and invasive GBS disease
- Correlate of protection against GBS colonization in pregnant women

The slideset underlines, moreover, the potential of GBS vaccine protecting against colonization:
- Could protect term and preterm (with early vaccination) newborns independent of antibody transfer.
- Protecting against maternal complications, including GBS associated chorioamnionitis and stillbirths.