Clinical Bacteriology: Vibrio Bacteria Characteristics
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Questions and Answers

Which of the following Vibrio species is a lactose fermenter?

  • V. alginolyticus
  • V. cholerae (correct)
  • V. fluvialis
  • V. vulnificus
  • Which Vibrio species is capable of growth on MacConkey agar and is oxidase positive?

  • V. fluvialis
  • V. alginolyticus
  • V. vulnificus
  • V. cholerae (correct)
  • Which Vibrio species is non-halophilic and alkalinophilic?

  • V. cholerae
  • V. alginolyticus (correct)
  • V. vulnificus
  • V. fluvialis
  • What is the result of the string test for VIBRIO species?

    <p>String formation (+)</p> Signup and view all the answers

    Which Vibrio species is associated with causing cholera and producing rice watery stool?

    <p>V. cholerae</p> Signup and view all the answers

    Which Vibrio species forms smooth and yellow colonies on Thiosulfate–citrate–bile salts–sucrose agar after 24 hours?

    <p>V. cholerae</p> Signup and view all the answers

    Which of the following characteristics is associated with Vibrio cholerae O1 serotype?

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

    What is the temperature range in which Pseudomonas aeruginosa can grow?

    <p>35C to 37C and 42C</p> Signup and view all the answers

    What is the primary pigment associated with Pseudomonas aeruginosa?

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

    Which species is commonly found in contaminated water and seafood, and causes gastroenteritis?

    <p>Vibrio parahaemolyticus</p> Signup and view all the answers

    What is the disease associated with Vibrio mimicus?

    <p>Wound, cellulitis gastroenteritis and bacteremia</p> Signup and view all the answers

    Which biochemical tests are positive for Pseudomonas aeruginosa?

    <p>Oxidase, nitrate reduction, acetamide, citrate</p> Signup and view all the answers

    Which Vibrio species is halophilic and causes wound and ear infection?

    <p>Vibrio fluvialis</p> Signup and view all the answers

    Which of the following characteristics is associated with Aeromonas hydrophila?

    <p>Motile and produces blue-green pus (Skin lesion)</p> Signup and view all the answers

    'Hot tub/ jacuzzi folliculitis' is associated with which bacterial species?

    <p>Pseudomonas aeruginosa</p> Signup and view all the answers

    'Anuria' is a symptom associated with which of the following bacterial species?

    <p>'Symptoms: severe dehydration, loss of fluids and electrolytes'</p> Signup and view all the answers

    Which bacterial species is associated with severe dehydration, loss of fluids and electrolytes, severe muscle cramping, and anuria?

    <p>Vibrio cholerae O1</p> Signup and view all the answers

    Which bacterial species is non-halophilic and capable of causing wound and ear infection?

    <p>Aeromonas hydrophila</p> Signup and view all the answers

    Which bacterial species is known as the 'agent of blue-green pus' and is associated with causing ventilator-associated pneumonia?

    <p>Pseudomonas aeruginosa</p> Signup and view all the answers

    Which Vibrio species is capable of growth on MacConkey agar and is oxidase positive?

    <p>Vibrio parahaemolyticus</p> Signup and view all the answers

    Which bacterial species is known to produce the pigment Pyocyanin and is commonly associated with causing swimmer's ear?

    <p>Pseudomonas aeruginosa</p> Signup and view all the answers

    Which Vibrio species forms smooth and yellow colonies on Thiosulfate–citrate–bile salts–sucrose agar after 24 hours?

    <p>Vibrio parahaemolyticus</p> Signup and view all the answers

    Which Vibrio species is a lactose fermenter and is commonly found in contaminated water and seafood, causing gastroenteritis?

    <p>Vibrio parahaemolyticus</p> Signup and view all the answers

    Which characteristic is associated with Aeromonas hydrophila?

    <p>Non-halophilic</p> Signup and view all the answers

    'Obligate aerobe' and 'grapelike or corn tortilla odor' are characteristics associated with which bacterial species?

    <p>Pseudomonas aeruginosa</p> Signup and view all the answers

    Which bacterial species is known to cause 'malignant otitis externa' or 'swimmer's ear' and is a contaminant in contact lens care solution?

    <p>Pseudomonas aeruginosa</p> Signup and view all the answers

    Study Notes

    Vibrio Species Characteristics

    • Vibrio parahaemolyticus is a lactose fermenter.
    • Vibrio vulnificus is capable of growth on MacConkey agar and is oxidase positive.
    • Vibrio alginolyticus is non-halophilic and alkalinophilic.

    Vibrio cholerae Characteristics

    • Vibrio cholerae causes cholera and produces rice watery stool.
    • Vibrio cholerae O1 serotype is associated with a mucoid, agglutination (cholera red) reaction.
    • Vibrio cholerae forms smooth and yellow colonies on Thiosulfate–citrate–bile salts–sucrose agar after 24 hours.
    • A string test for Vibrio species is positive, indicating the presence of an agglutinin.

    Pseudomonas aeruginosa Characteristics

    • Pseudomonas aeruginosa can grow in a temperature range of 25-42°C.
    • Pseudomonas aeruginosa produces a blue-green pigment called pyocyanin.
    • Pseudomonas aeruginosa causes ventilator-associated pneumonia and is known as the 'agent of blue-green pus'.
    • Pseudomonas aeruginosa produces pyocyanin and is commonly associated with causing swimmer's ear.

    Other Bacterial Species Characteristics

    • Aeromonas hydrophila is non-halophilic and capable of causing wound and ear infection.
    • Aeromonas hydrophila is an obligatory aerobe and has a grapelike or corn tortilla odor.
    • Vibrio mimicus causes gastroenteritis and is commonly found in contaminated water and seafood.
    • Vibrio vulnificus is halophilic and causes wound and ear infection.
    • Pseudomonas aeruginosa is associated with 'hot tub/jacuzzi folliculitis'.
    • Vibrio cholerae causes severe dehydration, loss of fluids and electrolytes, severe muscle cramping, and anuria.

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    Description

    Test your knowledge of Vibrio bacteria characteristics in clinical bacteriology. This quiz covers lactose fermenter, sucrose fermenter, general characteristics, biochemical tests, and source culture media of Vibrio cholerae and related species.

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