Difference between revisions of "Cryptosporidiosis"

From WikiVet English
Jump to navigation Jump to search
Line 1: Line 1:
==Overview==
+
== Introduction ==
Disease caused by the parasite [[Cryptosporidium|cryptosporidium]].
 
  
 +
This is a '''zoonotic''', diarrhoea- causing, disease of cattle and other domestic livestock caused by the parasite [[Cryptosporidium|cryptosporidium]].It is a protozoan parasite that inhabits crypt cells of the intestine. Transmission of the disease is faeco- oral. The disease is sever in humans and can be fatal in the immunocompromised. It causes severe sickness and diarrhoea for up to two weeks.<br>
  
  
==Diagnosis==
 
  
*Faecal smear
+
== Clinical Signs ==
**Ziehl-Neelson (ZN) stain
 
**Oocysts stain red against a blue/green background
 
  
*Immunoassays
+
Often seen in adolescent calves, may present as a sudden outbreak or as sporadic disease. Animals may have weight loss and and appear dull and depressed. Diarrhoea will be profuse and watery and may appear green/ black.
**Detect oocysts in faeces
 
  
==Control==
+
<br>
  
*Isolate/quarantine bought-in calves
+
== Diagnosis ==
**Treat if signs of [[Diarrhoea|diarrhoea]] present
 
  
*Good hygiene, adequate bedding and disinfection of calf pens is important
+
Clinical signs and age of cattle will provide a presumptive diagnosis. A faecal smear with&nbsp;'''Ziehl-Neelson''' (ZN) stain is diagnostic and if cryptosporidium is present then oocysts stain red against a blue/green background. Immunoassayscan also be performed to detect oocysts in faeces.
  
*Prevention/treatment
 
**Halofuginone
 
***Halocur or Intervet
 
***Oral dosage
 
  
  
==Villus Atrophy in Enteritis==
+
== Control ==
  
* Affects calf, lamb, piglet, kitten.
+
Isolate/quarantine bought-in calves maintain good hygiene by providing adequate bedding and disinfecting calf pens.  
* Increasingly important as part of the neonatal [[Diarrhoea|diarrhoea]] complex in calves.
 
* Zoonosis.
 
  
====Pathology====
+
If diarrhoea is present and cryptosporidium has been detected then treat with halofuginon, trade names&nbsp;Halocur or Intervet. This treatment is given orally.
  
=====Gross=====
+
<br>
  
* Intestines diffusely reddened, with fluid contents.
+
[[Category:To_Do_-_Review]]
 
 
=====Histological=====
 
 
 
* Tiny parasites on surface of epithelium.
 
* Villus atrophy and fusion.
 
* Iinflammation (mainly lymphoid) in crypts and lamina propria.
 
 
 
[[Category:To_Do_-_Clinical]]
 

Revision as of 16:20, 10 March 2011

Introduction

This is a zoonotic, diarrhoea- causing, disease of cattle and other domestic livestock caused by the parasite cryptosporidium.It is a protozoan parasite that inhabits crypt cells of the intestine. Transmission of the disease is faeco- oral. The disease is sever in humans and can be fatal in the immunocompromised. It causes severe sickness and diarrhoea for up to two weeks.


Clinical Signs

Often seen in adolescent calves, may present as a sudden outbreak or as sporadic disease. Animals may have weight loss and and appear dull and depressed. Diarrhoea will be profuse and watery and may appear green/ black.


Diagnosis

Clinical signs and age of cattle will provide a presumptive diagnosis. A faecal smear with Ziehl-Neelson (ZN) stain is diagnostic and if cryptosporidium is present then oocysts stain red against a blue/green background. Immunoassayscan also be performed to detect oocysts in faeces.


Control

Isolate/quarantine bought-in calves maintain good hygiene by providing adequate bedding and disinfecting calf pens.

If diarrhoea is present and cryptosporidium has been detected then treat with halofuginon, trade names Halocur or Intervet. This treatment is given orally.