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      Prevalence of enteropathogenic, enteroaggregative, and diffusely adherent Escherichia coli among isolates from children with diarrhea in new Caledonia.

      The Journal of Infectious Diseases
      Bacterial Adhesion, Case-Control Studies, Child, Child, Preschool, Diarrhea, microbiology, Escherichia coli, classification, isolation & purification, pathogenicity, Humans, Infant

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          Abstract

          The clinical significance of HEp-2-adherent Escherichia coli in children with diarrhea in New Caledonia has been examined by testing isolates from stools of ill children and matched controls in a HEp-2 cell binding assay and by hybridizing the same clones with DNA probes identifying the enteropathogenic (EPEC), enteroaggregative (EAggEC), and diffusely adherent (DAEC) E. coli. From the 100 patient-control pairs, 35 HEp-2-adherent strains were isolated; 24 were identified as the only pathogen in stools of ill children, and 11 were from controls. EPEC strains were significantly associated with diarrheal disease (P < .008) in children in the first 2 years of life. For the DAEC strains, the difference in rate of isolation between patients and controls was significant only when the presence of afa/daa sequences in the strains was considered (P = .03, Fisher's exact test). The afa/daa-positive DAEC isolates were characterized from children 2-6 years old. EAggEC strains were isolated equally in patients and controls.

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