Haemophilus influenzae Specimen Collection and Processing
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Questions and Answers

What is the main reason that Haemophilus influenzae type b incidence has fallen dramatically since the introduction of the vaccine?

  • The vaccine is highly effective at preventing infection. (correct)
  • The vaccine has made the bacteria less virulent.
  • The vaccine has led to herd immunity in the population.
  • The vaccine has eradicated the bacteria completely.

    • What type of blood agar is required to cultivate Haemophilus species?

  • Horse blood agar
  • Sheep blood agar
  • Rabbit blood agar
  • Chocolate agar (correct)

    • At what temperature should specimens for Haemophilus testing be incubated?

  • 25-30°C
  • 35-37°C (correct)
  • 40-45°C
  • Room temperature

    • Which specimen type is most suitable for diagnosing Haemophilus infections?

    <p>All of the above</p> Signup and view all the answers

    Which factor is required for the growth of Haemophilus species on sheep blood agar?

    <p>NAD (V factor)</p> Signup and view all the answers

    Which organism is the causative agent for Gonorrhea?

    <p>Neisseria gonorrhoeae</p> Signup and view all the answers

    What is the hemolysis pattern typically seen in Neisseria species?

    <p>Alpha hemolysis</p> Signup and view all the answers

    Which type of agar is commonly used to culture Neisseria species in the laboratory?

    <p>Thayer Martin agar</p> Signup and view all the answers

    Intracellular growth of Neisseria species typically occurs inside which type of cells?

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

    Which antibiotic is commonly used in the treatment of Neisseria gonorrhoeae infections?

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

    Which disease is caused by Hemophilus ducreyi?

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

    Which nutrient factor is required for the growth of Hemophilus species that require only the V factor?

    <p>NAD (V factor)</p> Signup and view all the answers

    How does Hemophilus exhibit satellitism?

    <p>By growing around an NAD source</p> Signup and view all the answers

    Which agar is recommended for the isolation of Hemophilus species?

    <p>Chocolate agar</p> Signup and view all the answers

    Which test can be used to detect the presence of Haemophilus influenzae type b (Hib) in clinical specimens?

    <p>Latex agglutination</p> Signup and view all the answers

    Which characteristic is associated with spirochetes?

    <p>They have a helical or spiral shape</p> Signup and view all the answers

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