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11 Cards in this Set
- Front
- Back
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Bacillus |
large motile rods endospore production B. anthracis has capsule in CO2 B. subtilis and B megatarium have capsule in air gram +ve obligate aerobic or facultative anaerobic |
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Pathogenic Bacillus species |
B. anthracis B. cereus B. licheniformis B. polymyxa |
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Saprophytic Bacillus species |
B. subtilis B. megatarium B. thuringiensis (insect pathogen used for pest control) B. cereus B. licheniformis B. polymyxa |
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Bacillus anthracis |
habitat: animals, environment morphology: rod, central spore capsule (CO2), no flagella culture: nutrient or blood agar at 37oC, R or S colonies resistance: vegetative days in carcass, spore, 50 years in soil |
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Bacillus anthracis pathogenicity |
cattle and sheep: peractue or acute septicaemia anthrax pigs: subacute anthrax (pharangeal oedema) horses: subacute anthrax humans: skin, pulmonary and intestinal anthrax carnivores: comparitavely resistant birds: resistant |
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Bacillus cereus pathogenicity |
cattle: mastitis humans: food poisoning, eye infection |
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Bacillus licheniformis pathogenicity |
cattle and sheep: sporadic abortion |
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Bacillus polymyxa pathogenicity |
paenibacillus larvae american fowlbrood of honeybees |
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Clostridium habitat and morphology |
habitat: soil, mud, alimentary tract, faeces, water large spore producing rods no capsule (except C. perfringens) motile (except C. perfringens) gram +ve |
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Clostridium biochemisty, culture and resistance |
obligate anaerobic fermentative (Except C. tetani, C. histolyticum) produce endotoxins culture: nutrient or blood agar vegetative has poor resistance spore has excellent resistance |
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Clostridium species |
C. septicum C. novyi C. haemolyticum C. histolyticum C. chauvoei C. perfringens A, B, C, D, E C. colinum C. difficile C. tetani C. botulinum C. piliforme |
