Clostridium perfringens forms part of the human gut microbiota and has been associated with lifethreatening necrotising enterocolitis (NEC) in premature infants. Whether specific toxigenic strains are responsible is unknown, as is the extent of diversity of strains in healthy premature babies. | Dynamics of toxigenic Clostridium perfringens colonisation in a cohort of prematurely born neonatal infants