Cold-Agglutinin Test and Legionella Pneumonia
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Questions and Answers

Which type of stain is best used for Legionella pneumophila?

  • Gram stain
  • Silver stain (correct)
  • Endospore stain
  • Acid-fast stain
  • What is the common growth medium for Legionella pneumophila?

  • Buffered charcoal-yeast extract agar (BCYE) (correct)
  • MacConkey agar
  • Blood agar
  • Mannitol salt agar
  • Which of the following tests would Legionella pneumophila most likely be positive for?

  • Citrate utilization test
  • Indole test
  • Tryptophan hydrolysis test
  • Oxidase test (correct)
  • What kind of bacteria are Legionella pneumophila?

    <p>Aerobic Gram-negative bacilli</p> Signup and view all the answers

    Which of the following enzymes are typically positive in Legionella pneumophila?

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

    How is Pontiac fever different from pneumonia?

    <p>It does not result in pneumonia</p> Signup and view all the answers

    Which type of test is used for the diagnosis of Pontiac fever?

    <p>Direct fluorescent antibody test (FAT) of sputum specimen</p> Signup and view all the answers

    How do the cell walls of Chlamydia bacteria resemble gram-negative bacteria?

    <p>They are not stained with the Gram stain</p> Signup and view all the answers

    What is the special replicative cycle of Chlamydia bacteria?

    <p>Forms reticulate and elementary bodies</p> Signup and view all the answers

    Which antibiotic is effective against Chlamydia bacteria?

    <p>Macrolide (erythromycin)</p> Signup and view all the answers

    What type of disease is Q fever?

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

    Which animals serve as reservoirs for Q fever?

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

    What is a common source of human infections with Q fever?

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

    Which of the following diseases is NOT a zoonosis?

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

    How can Q fever be transmitted to humans?

    <p>Inhalation of contaminated dust particles</p> Signup and view all the answers

    What is the primary mode of transmission of Chlamydophila pneumonia?

    <p>Person-to-person transmission</p> Signup and view all the answers

    Which group is particularly at risk of contracting Chlamydophila pneumonia?

    <p>Elderly individuals</p> Signup and view all the answers

    What is the main species that Chlamydophila pneumonia infects?

    <p>Both humans and animals</p> Signup and view all the answers

    Which age group is least likely to be affected by Chlamydophila pneumonia?

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

    In the context of Chlamydophila pneumonia, what is the term for transmission through contaminated air droplets?

    <p>Respiratory transmission</p> Signup and view all the answers

    What clinical presentation should suggest Q fever?

    <p>Combination of pneumonia and hepatitis</p> Signup and view all the answers

    In which phase antigen is acute Q fever associated with?

    <p>Phase II antigen</p> Signup and view all the answers

    What distinguishes the clinical presentation of Q fever from most other rickettsial diseases?

    <p>Presence of a rash</p> Signup and view all the answers

    Which symptom is NOT commonly seen in Q fever?

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

    What is the significance of the absence of a rash in Q fever diagnosis?

    <p>It confirms the presence of Q fever</p> Signup and view all the answers

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