Clostridium butyricum: a collection of strains from various origins and spatial and temporal contexts.
Clostridium butyricum encompasses strains with contrasting roles in human health, ranging from beneficial probiotics to opportunistic pathogens. The C. butyricum strains included in this study were isolated from preterm neonates hospitalized in 13 French neonatal intensive care units (NICUs) between 2003 and 2023.