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 (C)</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. (D)</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 (B)</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. (B)</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 (B)</p> Signup and view all the answers

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

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

Which of the following is true about Aeromonas and Plesiomonas?

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

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

<p>Oxidase test (A)</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 (A)</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 (B)</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 (B)</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 (C)</p> Signup and view all the answers

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