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Cards In This Set
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What members of the Enterobacteriaceae family are normal human GI flora and can be opportunistic pathogens?
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Citrobacter, Enterobacter, Klebsiella, Morganella, Proteus, Providencia, Serratia, Edwardsiella
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What is the general colonial appearance of Enterobacteriaceae?
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Large, gray, smooth
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What appearance can Klebsiella and Enterobacter take?
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Mucoid due to polysaccharide capsule
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What additional feature can E. coli have on BAP?
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Beta hemolysis
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Which Enterobacteriaceae is known for swarming on Blood and chocolate agar?
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Proteus
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What is the colonial appearance of Citrobacter on MacConkey, HE and XLD?
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MacConkey - resembles E. coli - lactose fermenterHE - colorlessXLD - black or red or yellow
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How is Citrobacter differentiated from E. coli?
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Citrobacter is H2S + and indole -E. coli is H2S - and indole +
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What is the TSI slant reaction for Citrobacter?
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Acid and H2S
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Where is enterobacter found?
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Soil, water, dairy products, normal GI flora
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What is the appearance of enterobacter on MacConkey, HE, and XLD
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MacConkey - non lactose fermenterHE - YellowXLD - yellow
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What are the IMViC and biochemical reactions for Enterobacter?
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H2S, methyl red, indole -VP, citrate, motility, and lactose +
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What is the TSI reaction of Enterobacter?
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Acid slant/deep with gas
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Where is Klebsiella found?
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Normal GI flora and can cause UTI and pneumonia
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Who is more susceptible to Klebsiella infection?
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Diabetics and alcoholics
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What antibiotic is Klebsiella most resistant to?
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Ampicillin
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