Traditional enteropathogenic Escherichia coli serotypes demonstrate a plasmid-mediated localized adherence in cultured HeLa or HEp-2 cells and induce an attaching-effacing intestinal lesion, both of which are considered pathognomonic and causes of diarrhea. This study describes three E. coli strains from infantile diarrhea which share these properties but belong to serotypes (O2:H2, O2:H25 and O15:H2) not considered enteropathogenic.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC257929PMC
http://dx.doi.org/10.1128/iai.59.5.1864-1868.1991DOI Listing

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