MT 38 Lab - Dengue NS1 Antigen Testing
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Questions and Answers

What is considered Dengue without warning signs according to the W.H.O classification?

  • Fever with Rashes and aches
  • Fever with positive tourniquet test (correct)
  • Fever with nausea and vomiting
  • Fever with leukopenia and aches

    • Which vector is more common in transmitting Dengue Fever?

  • Aedes aegypti (correct)
  • Ixodes scapularis
  • Culex pipiens
  • Anopheles gambiae

    • What is a characteristic feature of Dengue Shock Syndrome (DSS)?

  • Elevated platelet count
  • Hypertension
  • Bradycardia
  • Bleeding tendencies (correct)

    • Which of the following is NOT one of the warning signs of severe Dengue according to W.H.O classification?

    <p>Positive tourniquet test</p> Signup and view all the answers

    What is the most common method for detecting Dengue Virus antigen?

    <p>Enzyme-linked immunosorbent assay (ELISA)</p> Signup and view all the answers

    How many petechiae per square inch are considered positive for the tourniquet test?

    <p>10 or more</p> Signup and view all the answers

    What is a common clinical fluid accumulation observed in Dengue with warning signs?

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

    Which of the following is not a symptom associated with Dengue with warning signs?

    <p>Muscle pain</p> Signup and view all the answers

    What is a characteristic of Severe Dengue according to the W.H.O classification?

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

    What method can be used to detect Dengue Virus antigens in tissue?

    <p>Immunofluorescence assay</p> Signup and view all the answers

    Which body fluid can be used for detecting DENV nucleic acid according to the text?

    <p><strong>Cerebrospinal fluid</strong> (CSF)</p> Signup and view all the answers

    IgM/IgG anti-DENV can be detected by immunoassay. Which of the following body fluids can this detection be conducted on?

    <p><strong>Serum or CSF</strong></p> Signup and view all the answers

    Which phase of dengue virus infections is NS1 detectable according to the text?

    <p>During the acute phase</p> Signup and view all the answers

    What does a negative NS1 test result indicate?

    <p>No current infection</p> Signup and view all the answers

    What should be done if someone tests negative for NS1 but suspects a recent dengue exposure?

    <p>Check for dengue IgM antibodies</p> Signup and view all the answers

    What does a positive result on the NS1 test confirm?

    <p>The presence of a recent dengue infection</p> Signup and view all the answers

    What does the text suggest about second-time dengue infections?

    <p>They are more severe due to the same serotype exposure</p> Signup and view all the answers

    What is the principle behind the Abbott Dengue Duo Test Kit according to the text?

    <p><strong>Immunochromatography</strong> /Lateral Flow Immunoassay</p> Signup and view all the answers

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