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19 Cards in this Set
- Front
- Back
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Pasteurella and Mannheimia general characteristic
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Gram negative rods
facultative anaerobe non motile non-spore forming |
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Pasteurella and Mannheimia spp. Natural habitat
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Commensals of the oropharyngeal and gastrointestinal tract mucosa
mammals, birds, and reptiles, survives poorly outside the host |
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Pasteurella and Mannheimia Respiratory ssp
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M haemolytica
P. motocida B trehalosi |
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Pasteurella and Mannheimia Respiratory pathogenesis
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decreased host defenses allow commensal bacteria livingi nt he upper respiratory tract to infect the lungs
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Pasteurella and Mannheimia Septicemia ssp.
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P. multocida
B. trehalosi |
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Pasteurella and Mannheimia Septicemia ssp. pathogenesis
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Fowl cholera, Haemorrhagic septicaeimia, vascular compromis and disruption
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Pasteurella and Mannheimia Trauma ssp.
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P. multocida
P. aerogenes P. canis |
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Pasteurella and Mannheimia pathogenesis
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Bites, scratches, licking
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Pasteurella gallinarum
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Fowl cholera (avian cholera)
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Pasteurella multocida diseases
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Atrophic rhinitis
Pneumonia in ruminants Snuffles in rabbits |
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pasteurella multocida ssp serogroups
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A, B, D, E, F based on hemagglutination of capsular antigens, eleven serotypes based on host specificity and pathogenicity
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Pasteurella multocida serotypes
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B:2 (asia)
E:2 ( Africa) |
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Haemorrhagic septicaemia via Pasteurella multocida
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not present in USA
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Pasteurella spp virulence factors
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Capsule
different capsular serotypes fimbria reduces the antigenicity of the capsule LPS |
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Pasteurella endotoxin
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LPS
toxic to respiratory epithelium decreases phagocytosis elictis inflammatory reaction |
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P. multocida toxin
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capsule type D
osteolytic inhabits mucous membranes of the upper respiratory tract |
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Mannheimia spp virulence factors
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leukotoxin, LPS - together drive a tissue destroying inflammatory response
Capsule, Fibriae, Adh1, Fibrinogen, exotoxins |
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Bovine respiratory disease complex
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bronchopneuomina, fibrinous pleuropneumonia via Mannehemia haemolytica, Pasteurella multocida, inhalation, ingestion, direct inoculation,
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Pasteurella and mannheimia spp public health significance
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P. multocida from bite wounds.
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