Microbiology Respiratory Tract Infections Quiz
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Questions and Answers

Which pathogen is the most common cause of croup?

  • Streptococcus pyogenes
  • Parainfluenza virus (correct)
  • Rhinovirus
  • Coronavirus

What is the most common cause of epiglottitis?

  • Corynebacterium diphtheriae
  • Haemophilus influenzae type B (correct)
  • Streptococcus pneumoniae
  • Respiratory syncytial virus

Which pathogen is associated with otitis media?

  • Streptococcus pyogenes
  • Parainfluenza virus
  • Streptococcus pneumoniae (correct)
  • Rhinovirus

What is a common cause of bronchiolitis?

<p>Respiratory syncytial virus (C)</p> Signup and view all the answers

Which pathogen is commonly associated with bacterial pneumonia?

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

What pathogen primarily causes inflammation of the throat due to viruses?

<p>Epstein–Barr virus (B)</p> Signup and view all the answers

Which pathogen is responsible for causing Scarlet fever with tonsils, yellowish rash, and strawberry tongue?

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

What is the causative agent of Herpangina, characterized by fever, sore throat, and tender vesicles in the oropharynx?

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

Which pathogen is identified as gram-positive cocci arranged in chains and showing sensitivity to bacitracin?

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

Which pathogen causes acute infection leading to cell death and latent infection, particularly in adenoidal and tonsillar tissues?

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

Which pathogen is responsible for causing Hand, foot and mouth disease, mainly in children, with a vesicular rash on the hands and feet and ulcerations in the mouth?

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

Which pathogen produces a thick adherent gray pseudomembrane on the tonsils and throat, along with sore throat, low-grade fever, and cervical adenopathy?

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

Which pathogen is responsible for post-streptococcal diseases such as rheumatic fever?

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

Which pathogen causes a necrotic and neurotoxic effect due to the production of Diphtheria toxin?

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

Which pathogen is identified as single-stranded, positive sense RNA genome, nonenveloped with an icosahedral nucleocapsid?

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

Which pathogen infects the mucosal epithelium of several organs such as the respiratory tract, GIT, and conjunctiva?

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

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