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30 Cards in this Set
- Front
- Back
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bile salts inhibit
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gram positives
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Lac+ forms
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red colonies on MacConkey agar
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Lac- forms
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white colonies on MacConkey agar
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is salmonella a lactose fermenter or nonfermentor?
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nonfermenter (Lac-)
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EMB agar contains dyes that inhibit
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gram positives
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ETEC
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enterotoxigenic E.coli
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what is the cause of traveler's diarrhea in adults
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ETEC
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heat labile toxin (LT) and heat stable toxin (ST) are important virulence factors of
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ETEC
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what is the predominant cause of infant diarrhea
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EPEC (Enteropathogenic E.coli)
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sorbitol- nonfermenting is a clinical lab marker for
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EHEC strain E.coli 0157:H7
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can cause hemolytic-uremic syndrome (kidney failure in children)
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EHEC
enterohemorrhagic E.coli |
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EIEC
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Enteroinvasive E.cloi
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type of E.coli that exhibits actin mediated intracellular motion and cell to cell spread
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Enteroinvasive E.coli
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Associated with persistent childhood watery diarrhea
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Enteroaggregative E.coli
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MCC of cystitis
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E.Coli
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Most common nosocomial cause of gram-negative bacteremia
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E.Coli
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disease transmitted by ingestion of human fecal material due to poor sanitation (high infectious dose)
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Typhoid fever
caused by Salmonella enterica typhi |
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the major virulence factor of this species is that it has a cell invasion system
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Salmonella typhi
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Lac- enterobacteriacea that forms H2S and produces gas
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Salmonella
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symptoms seen 1-3 weeks after ingestion, abdominal pain, fever, enlarged spleen, and "rose spots"
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Typhoid fever from Salmonella
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Lac- enterobacteriaceae, non-motile, no H2S formation
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Shigella
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symptoms seen 1-3 days after ingestion, bloody diarrhea, common in male homosexuals
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Shigella
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low infectious dose, common in children in day-care centers
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shigella
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causes damage to colonic mucosa but no bacterial invasion of the bloodstream
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shigella
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invasion plasmid antigens are the most common virulence factors of
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shigella
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Us infections are mostly from eating raw shellfish from the Gulf
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Vibrio cholerae
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gram negative, curved-spiral rods, single polar flagellum, requires microaerophilic conditions
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Campylobacter jejuni
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common cause of gastric ulcers
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helicobacter pylori
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gram negative, curved rods, microaerophilic, very slow growing
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helicobacter pylori
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the most important virulence factor for this organism is urease which creates a more alkaline environment and allows it to survive in extremely acidic environments
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helicobacter pylori
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