From: Swine enteric colibacillosis: diagnosis, therapy and antimicrobial resistance
Criteria | ETEC | ETEC | EPEC | |||
---|---|---|---|---|---|---|
F4 | F18 | F5 | F6 | F41 | ||
Haemolytic colonies | Nearly all | None | None | |||
Genotypic analysis | Fimbriae and toxins | Eae (intimin) | ||||
Serogroups (most prevalent) | O8, O138, O139, O141, O147, O149, O157 | O8, O9, O20, O64, O101 | O45, O103 | |||
Slide agglutination (F adhesin serotyping) | All | Not reliable | Not reliable | Not reliable | ||
Histology | Bacterial layers are observed in patches on the apical surface of villous epithelial cells in the ileum and to a lesser extent in the jejunum | Multifocal “attaching and effacing” (AE) lesions involving the small intestine (duodenum, ileum, cecum) |