Changes

<big><center>[[Infectious agents and parasites|'''BACK TO INFECTIOUS AGENTS AND PARASITES''']]</center></big>

<big><center>[[Infectious agents and parasites|'''BACK TO INFECTIOUS AGENTS AND PARASITES''']]</center></big>

 

* [[Intestines - Inflammatory Bowel Disease And Related Conditions#Histiocytic Ulcerative Colitis|Histiocytic ulcerative colitis]] in the dog and cat.

* [[Intestines - Inflammatory Bowel Disease And Related Conditions#Histiocytic Ulcerative Colitis|Histiocytic ulcerative colitis]] in the dog and cat.

* Causes [[Intestines - diarrhoea#Secretory Diarrhoeas|secretory diarrhoea]]

* Causes [[Intestines - diarrhoea#Secretory Diarrhoeas|secretory diarrhoea]]

**May enter blood to cause septicaemia

**May enter blood to cause septicaemia

*Clinical infections:

*Clinical infections:

**Avian colibacillosis:  

**Avian [[Intestines - Catarrhal Enteritis#Colibacillosis|Colibacillosis]]:  

***Septicaemia in newly-hatched chickens

***Septicaemia in newly-hatched chickens

***Infection enters via faecal contamination of the egg surface or via the ovary of the hen

***Infection enters via faecal contamination of the egg surface or via the ovary of the hen

*''E. coli'' may cause diarrhoea via attaching and efacing lesions, where bacteria adhere intimately to the enterocyte, and cause localised effacement of the brush border microvilli

*''E. coli'' may cause diarrhoea via attaching and efacing lesions, where bacteria adhere intimately to the enterocyte, and cause localised effacement of the brush border microvilli

*Enterotoxigenic ''E. coli'':

*Enterotoxigenic ''E. coli'':

**These strains carry a plasmid which encodes an enterotoxin

**These strains carry a plasmid which encodes an enterotoxin

**Two types of enterotoxin: heat-labile (LT) and heat-stable (ST) toxins

**Two types of enterotoxin: heat-labile (LT) and heat-stable (ST) toxins