Influenza Virus Characteristics
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Questions and Answers

What is the mode of transmission of the mumps virus?

  • Vector-borne transmission
  • Direct contact
  • Contaminated food and water
  • Respiratory droplets (correct)
  • What is the typical incubation period of mumps?

  • 7-10 days
  • 21-25 days
  • 14-18 days (correct)
  • 28-30 days
  • What is the diagnostic test of choice for mumps?

  • Viral Isolation
  • PCR of CSF (correct)
  • Ribonucleic protein helix
  • Immunofluorescence
  • Why has there been a resurgence of mumps?

    <p>Waning immunity to vaccine</p> Signup and view all the answers

    What is the typical duration of communicability of mumps?

    <p>3 days before and 4 days after active infection</p> Signup and view all the answers

    What is the name of the vaccine that protects against mumps?

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

    What is the main reason for the annual flu vaccine?

    <p>Due to the segmented nature of the influenza virus genome, causing mutations and different strains</p> Signup and view all the answers

    What is the function of Neuraminidase in the influenza virus?

    <p>To hydrolyze the mucus and destroy unoccupied hemagglutinin receptors</p> Signup and view all the answers

    What is Antigenic Drift?

    <p>A minor mutation in the hemagglutinin antigen, making prior immunity less effective</p> Signup and view all the answers

    What is the role of Hemagglutinin in the influenza virus?

    <p>To bind to host receptors and facilitate membrane fusion</p> Signup and view all the answers

    What is the main reservoir of influenza viruses?

    <p>Birds, swine, horses, dogs, and cats</p> Signup and view all the answers

    What is Antigenic Shift?

    <p>A major change in the surface antigens of the influenza virus</p> Signup and view all the answers

    What is the primary factor that determines immunity to different strains of influenza?

    <p>Antibody against the H protein</p> Signup and view all the answers

    What is the typical incubation period of influenza?

    <p>2-4 days</p> Signup and view all the answers

    What is the primary mechanism by which influenza epidemics occur?

    <p>Antigenic shift</p> Signup and view all the answers

    What is the primary benefit of early administration of Neuraminidase Inhibitors (NAIs) in influenza treatment?

    <p>Reduction of severity and duration</p> Signup and view all the answers

    What is the primary purpose of flu vaccination in public health?

    <p>To prevent severe illness in high-risk individuals</p> Signup and view all the answers

    What is the characteristic of the clinical presentation of influenza?

    <p>Abrupt acute onset of fever and body pain</p> Signup and view all the answers

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