Bacterial Meningitis Overview
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Questions and Answers

Which bacterial organism is most commonly responsible for community-acquired bacterial meningitis?

  • Neisseria meningitidis
  • Group B streptococci
  • Listeria monocytogenes
  • Streptococcus pneumoniae (correct)
  • What is the primary predisposing condition that increases the risk of pneumococcal meningitis?

  • Otitis
  • Mastoiditis
  • Pneumococcal pneumonia (correct)
  • Sinusitis
  • Which bacterial organism is associated with meningitis predominantly in neonates but is now increasingly reported in individuals over 50 years?

  • Enterobacteriaceae
  • Haemophilus sp.
  • Streptococcus agalactiae (correct)
  • Staphylococcus aureus
  • What is the source of nasopharyngeal colonization that can lead to invasive meningococcal disease?

    <p>Asymptomatic carrier state</p> Signup and view all the answers

    Which bacterial organism is responsible for approximately 25% of community-acquired bacterial meningitis cases?

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

    Which bacterial organism is responsible for approximately 10% of community-acquired bacterial meningitis cases?

    <p>Listeria monocytogenes</p> Signup and view all the answers

    What is a predisposing condition for meningitis due to Streptococci sp., gram-negative anaerobes, Staphylococcus aureus, Haemophilus sp., and Enterobacteriaceae?

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

    What host factor plays a role in the risk of invasive disease following nasopharyngeal colonization?

    <p>Host immune defense mechanisms</p> Signup and view all the answers

    Which bacterial organism was previously responsible for meningitis predominantly in neonates but is now increasingly reported in individuals over 50 years?

    <p>Group B Streptococcus</p> Signup and view all the answers

    What is the main manifestation of bacterial meningitis associated with a CNS inflammatory reaction?

    <p>Decreased consciousness</p> Signup and view all the answers

    Which bacterial organism is associated with approximately 50% of community-acquired bacterial meningitis cases?

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

    What is the primary route through which infection may be initiated leading to invasive meningococcal disease?

    <p>Nasopharyngeal colonization</p> Signup and view all the answers

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