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Provide results for Enterobacteriacea for the following: gram stain, oxidase, glucose, nitrate
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Gnb, oxidase neg, glucoser fermenter, nitrate reducers (pos)
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How does Shigella produce dysentery (mechanism)?
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Enterotoxins
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What is the TSI result for Shigella?
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K/A (uses glu only)
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How is Shigella serotyped? Can it be tested biochemically?
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By somatic O Ags. No, biochemically inert
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What organisms is Edwardsiella usually associated with? What is the most common way to get an infection?
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Reptiles. Aquatic accident (cut foot on ocean bottom or cut hand while cleaning fish tank)
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Which common organism does Edwardsiella resemble biochemically? What is the one thing that sets it apart from this other bug?
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E. coli; Edward has sulfur. H2S pos
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How is Salmonella grouped? subgrouped?
What is the name of this system?
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By somatic O Ags, and divided into subgroups based on H (flagellar) Ags.
Kauffman-White
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What is the most common way to get salmonella poisoning?
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Eating contaminated poultry products
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There are 4 types/modes of infection associated with Salmonella. What are they?
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Gastroenteritis, Bacteremia/Septacemia, Enteric Fever, Carrier State
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What bug is associated with Typhoid Mary. Why was she convinced she was not infected?
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Salmonella. Asymptomatic carrier.
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What is the TSI result for Salmonella?
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K/A/Gas
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What are the results for Salmonella with the following tests: Citrate? Lys? Orn? Motile? Sulfide?
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All Pos
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What are the results for Salmonella with the following tests: Indole? Urea? PD?
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All neg
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What are the clinical implications of proteus mirabilis?
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UTIs, wounds, stones
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What are the clinical implications of proteus vulgaris?
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Wounds of immunocomprimised patients and affects people on long term abx tx
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