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

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

<p>Catalase (C)</p> Signup and view all the answers

How is Pontiac fever different from pneumonia?

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

What is the special replicative cycle of Chlamydia bacteria?

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

Which antibiotic is effective against Chlamydia bacteria?

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

What type of disease is Q fever?

<p>Bacterial (A)</p> Signup and view all the answers

Which animals serve as reservoirs for Q fever?

<p>Cattle (A)</p> Signup and view all the answers

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

<p>Goats (C)</p> Signup and view all the answers

Which of the following diseases is NOT a zoonosis?

<p>Tuberculosis (A)</p> Signup and view all the answers

How can Q fever be transmitted to humans?

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

What is the primary mode of transmission of Chlamydophila pneumonia?

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

Which group is particularly at risk of contracting Chlamydophila pneumonia?

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

What is the main species that Chlamydophila pneumonia infects?

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

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

<p>Infants (C)</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 (A)</p> Signup and view all the answers

What clinical presentation should suggest Q fever?

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

In which phase antigen is acute Q fever associated with?

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

Which symptom is NOT commonly seen in Q fever?

<p>Rash (A)</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 (D)</p> Signup and view all the answers

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