Table 1 The pathogenic potential of the three main different groups of E. coli strains3,4.

From: The risk of urinary tract infection in vegetarians and non-vegetarians: a prospective study

Clinical manifestation

Groups of E. coli

Commensal

ExPECa

Intestinal pathogenic

Asymptomatic intestinal colonization

Major

Minor

None

Uncomplicated UTIs

Minor

Major

None

Complicated UTIs

50%

50%

None

Gastroenteritis

None

None

Major

Other infections other than UTI and gastroenteritis

Variable

Variable

None

  1. aExPEC: extra-intestinal pathogenic E. coli.