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6 Cards in this Set
- Front
- Back
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---- cause many cases of bacteremia associated with sickle cell disease. Among patients with hemoglobinopathies, osteomyelitis caused by --- is 10 times more frequent than that caused by other pyogenic bacteria.
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Salmonellae cause many cases of bacteremia associated with sickle cell disease. Among patients with hemoglobinopathies, osteomyelitis caused by salmonella is 10 times more frequent than that caused by other pyogenic bacteria.
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. Bismuth sulfite media grow black colonies. The isolate fermented glucose and mannose but not lactose and sucrose. The most probable causative agent of diarrhea is:
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salmonella
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The major property that distinguishes E. coli from the two other intestinal pathogens Shigella and Salmonella is that it ferments
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lactose
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If a stool specimen containing E. coli Serotype O157:H7 is plated on sorbitol-MacConkey agar and observed at 48 hours, the isolates
Answer Choices: Do not ferment sorbitol and appear pink [Do not ferment sorbitol and appear colorless Ferment sorbitol and appear pink [ D Ferment sorbitol and appear colorless [Highlight this choice.] [Strikethrough this choice.] E Do not grow on the medium |
Serotype O157:H57 of enterohemorrhagic E. coli (EHEC) strain is associated with colitis, hemorrhagic diarrhea and hemolytic uremic syndrome. When a stool specimen is cultured on MacConkey agar containing sorbitol other E. coli ferments sorbitol and appears pink in color. However, E. coli O157:H7 does not ferment sorbitol and appears colorless. This isolates of E. coli O157:H7 can be tested by latex agglutination test for rapid presumptive identification.
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Which of the following species of Shigella is a lactose fermenter?
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s sonni
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The urine specimen of a 55-year-old AIDS patient yields non-lactose fermenting colonies on MacConkey agar. Typical swarming of the colonies was observed. The organism isolated was a gram-negative rod and gave a negative oxidase and positive urease test. Which of the following is the most probable organism isolated?
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proteus
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