Duration of Colonization by Extended-Spectrum β-Lactamase-Producing Enterobacteriaceae in Healthy Newborns and Associated Risk Factors: A Prospective Cohort Study

摘要

Duration of colonization by extended-spectrum β-lactamase-producing Enterobacteriaceae (ESBL-E) and factors associated with it were studied in 20 newborns in Seville, Spain. Median duration of colonization was 7.5 months; factors associated with prolonged colonization were delivery by caesarean section, colonization of the mother, and phylogroup B2 Eschericha coli isolate.