Shigellosis
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Questions and Answers

Which of the following bacteria grow better at 20–30 °C?

  • Yersinia
  • Vibrio cholerae (correct)
  • Vibrio parahemolyticus
  • Campylobacter
  • What is the infective dose required for Vibrio cholerae infection?

  • ≥10^8 (correct)
  • ≥10
  • ≥10^4
  • ≥10^2
  • Which bacteria is recognized as one of the main causes of bacterial foodborne disease in many developed countries?

  • Helicobacter pylori
  • Vibrio cholerae
  • Vibrio parahemolyticus
  • Campylobacter (correct)
  • Which bacterial family is considered the most important in human medicine?

    <p>Enterobacteriaceae</p> Signup and view all the answers

    Which of the following is true about E. coli O157:H7?

    <p>It can cause hemorrhagic colitis and hemolytic-uremic syndrome.</p> Signup and view all the answers

    Which bacterial species is considered an indicator organism for fecal contamination of water and foods?

    <p>Escherichia coli</p> Signup and view all the answers

    Which of the following is a characteristic of Shigellae?

    <p>They can penetrate the colonic mucosa to cause local necrotic infections.</p> Signup and view all the answers

    Which antigen of the Enterobacteriaceae is a specific polysaccharide chain in the lipopolysaccharide complex of the outer membrane?

    <p>O antigen</p> Signup and view all the answers

    Which type of E. coli is associated with traveler's diarrhea?

    <p>Enterotoxigenic E. coli</p> Signup and view all the answers

    Which of the following is true about Aeromonas and Plesiomonas?

    <p>They are oxidase positive</p> Signup and view all the answers

    What is the main method used to identify Aeromonas and Plesiomonas?

    <p>Oxidase test</p> Signup and view all the answers

    Which of the following is a common therapy for severe diarrhea caused by Aeromonas and Plesiomonas?

    <p>Fluid replacement</p> Signup and view all the answers

    Which of the following is true about Shigellosis?

    <p>It is caused by a bacterium that inhibits protein synthesis in eukaryotic cells</p> Signup and view all the answers

    What is the main difference between typhoid salmonelloses and enteric salmonella infections?

    <p>Typhoid salmonelloses cause systemic disease in humans, while enteric salmonella infections are restricted to the intestinal tract</p> Signup and view all the answers

    Which of the following is true about Yersiniosis?

    <p>It is transmitted through fecal contamination of water, milk, and meat</p> Signup and view all the answers

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