Introduction to Dengue Fever
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Questions and Answers

Which of the following is NOT a factor that is thought to impact the risk of dengue infection, disease, and disease severity?

  • Environmental factors (correct)
  • Viral factors
  • Vector factors
  • Host factors
  • Which of the four dengue virus types provides the longest lasting cross-protection against the other three types following infection?

  • DENV-3
  • DENV-4
  • DENV-2
  • DENV-1 (correct)
  • Which of the following is NOT a clinical manifestation of dengue virus infection?

  • Life-threatening shock syndrome
  • Asymptomatic infection
  • Chronic fatigue syndrome (correct)
  • Mild febrile illness
  • According to the World Health Organization's 1997 classification scheme, which of the following is NOT a category of symptomatic dengue virus infection?

    <p>Dengue neurological syndrome</p> Signup and view all the answers

    Which of the following statements about the four dengue virus types is true?

    <p>They are genetically and serologically distinct</p> Signup and view all the answers

    Which of the following is the most likely reason for an individual living in a dengue-endemic area with all four dengue virus types co-circulating to be at risk of infection with any and all of the DENV types?

    <p>The transient cross-protection among the four DENV types weakens and disappears over time</p> Signup and view all the answers

    Which statement about the WHO 1997 classification scheme is accurate?

    <p>It focused on plasma leakage leading to intravascular volume depletion as the cardinal manifestation.</p> Signup and view all the answers

    What was the primary reason for the WHO to introduce the 2009 classification scheme?

    <p>To emphasize early recognition of warning signs for optimal triage and management.</p> Signup and view all the answers

    According to the passage, what is a limitation of the 2009 WHO classification scheme?

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

    What concept was introduced by the WHO South-East Asia Regional Office in 2011?

    <p>The expanded dengue syndrome</p> Signup and view all the answers

    Which of the following is NOT cited as a common risk factor for the expanded dengue syndrome?

    <p>Plasma leakage</p> Signup and view all the answers

    According to the passage, which of the following statements is true regarding the different dengue classification schemes?

    <p>The WHO issued additional documents on dengue management in 2011 and 2012.</p> Signup and view all the answers

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