The study investigators hypothesize that Clostridium butyricum and Clostridium neonatal will be more frequently found in the stool of preterm infants with ulcerative necrotizing enterocolitis compared to healthy matched control infants. Systematic daily samples should show that the kinetics of colonization precedes the onset of the pathology. Finally, the systematic ecological survey at the time of infection could help understand the mode of acquisition and transmission of these bacteria.
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AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Presence of C. butyricum
Timeframe: Each day of hospitalization (maximum 120 days)
Presence of C. neonatale
Timeframe: Each day of hospitalization (maximum 120 days)
Culture of C. butyricum
Timeframe: Each day of hospitalization (maximum 120 days)
Culture of C. neonatale
Timeframe: Each day of hospitalization (maximum 120 days)