Abstract
Pathogenic strains of Escherichia coli were considered to have the ability to cause only intestinal (II) or extraintestinal (IEI) infections. However, recent studies have reported the occurrence of strains of E. coli leading to both types of infections in the same patient. The frequent isolation of enteroaggregative E. coli (EAEC) from sites of extraintestinal infections has raised the qu…