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Pasteurella species and Mannheimia haemolytica (view source)
Revision as of 17:10, 16 December 2007
, 17:10, 16 December 2007no edit summary
*In [[Pleural cavity and membranes - inflammatory#Pyothorax (Thoracic empyema)|pyothorax]]
*In [[Pleural cavity and membranes - inflammatory#Pyothorax (Thoracic empyema)|pyothorax]]
*''P. multocida'' in [[Muscles - inflammatory#Abscesses|cellulitis]] in cats
*''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