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

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

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

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

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

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

<p>Ascites (B)</p> Signup and view all the answers

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

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

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

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

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

<p>Immunofluorescence assay (A)</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) (A)</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> (B)</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 (A)</p> Signup and view all the answers

What does a negative NS1 test result indicate?

<p>No current infection (C)</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 (D)</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 (A)</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 (D)</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 (C)</p> Signup and view all the answers

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