Difference between revisions of "Pasteurella species and Mannheimia haemolytica"

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<big><center>[[Infectious agents and parasites|'''BACK TO INFECTIOUS AGENTS AND PARASITES''']]</center></big>
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#REDIRECT[[:Category:Pasteurella and Mannheimia species]]
<big><center>[[Bacteria|'''BACK TO BACTERIA''']]</center></big>
 
 
 
*''Pasteurella multocida'' in [[Nasal cavity - inflammatory#Bacterial rhinitis|Atrophic rhinitis of pigs]] and [[Bacterial infections#In Pigs|atrophic rhinitis]]
 
* [[Peritoneal cavity - inflammatory#Peritonitis|Peritonitis in sheep]]
 
* [[General Pathology - Oedema#Permeability type|Permeability types of pulmonary oedema]].
 
* Can be secondary to [[Viral infections#In Cattle|IBR]]
 
*Causes [[Bacterial infections#In Rabbits|'Snuffles' in rabbits]]
 
*''Manheimia haemolytica'' biotype A serotype 1 (90%) and ''Pasteurella multocida'' cause [[Bacterial infections#Pneumonic pasteurellosis|pneumonic pasteurellosis]]
 
*[[Bacterial infections#Pasteurellosis in pigs|Pasteurellosis in pigs]]
 
* Can cause vascular fragility, leading to [[General Pathology - Haemostasis#Haemorrhagic Disease Due To Vascular Fragility|haemorrhagic disease]].
 
*''M. haemolytica'' and ''P. multocida'' may contribute to [[Bacterial infections#Enzootic pneumonia of calves|Enzootic pneumonia of calves]]
 
*Often follows [[Viral infections#Parainfluenza- 3|parainfluenza - 3]] infection of cattle
 
*''P. haemolytica'' in [[Bacterial infections#Enzootic pneumonia of lambs|enzootic pneumonia of lambs]]
 
*In [[Pleural cavity and membranes - inflammatory#Pyothorax (Thoracic empyema)|pyothorax]]
 
*''P. multocida'' in [[Muscles - inflammatory#Abscesses|cellulitis]] in cats
 
 
 
===Overview ''Pasteurella''===
 
 
 
*Found in the upper respiratory tract and gastrointestinal tract mucosa
 
*Usually opportunistic organisms, causing disease during times of stress, low resistance or concurrent infections
 
*Resist phagocytosis by their capsule
 
*Not part of the human bacterial flora
 
 
 
===Bacteria Properties===
 
 
 
*Short Gram-negative bacilli
 
*Oxidase-positive
 
*May show bipolar staining
 
*Catarrhal odour
 
*Produce endotoxins which cause host damage and death
 
 
 
===''Pasteurella multocida''===
 
 
 
*===Typa A===
 
**Commensal in upper respiratory tract of animals in UK
 
**Commomly repsonsible for dog and cat bite wound infections in humans and animals
 
**Some strains involved in Atropic Rhinitis, and produce osteolytic toxin
 
 
 
*===Type B===
 
**Causes Haemorrhagic Septicaemia of cattle in Southern Europe and Asia
 
 
 
*===Type D===
 
**Causes Atropic Rhinitis along with ''Bordetella bronchiseptica''
 
**Produces an osteolytic toxin, which stimulates osteoclast, inducing bone resorption
 
 
 
*===Type E===
 
**Causes Afican Bovine Haemorrhagic Septicaemia
 
 
 
===''Pasteurella pneumotropica''===
 
 
 
*Carried in nasopharynx of many small rodents
 
*Causes pneumonia in rodents as a secondary disease
 

Latest revision as of 12:17, 14 May 2010