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Rapid Molecular Detection and Differentiation of Influenza Viruses A and B
Published on: January 30, 2017
Factors affecting QuickVue Influenza A + B rapid test performance in the community setting
Calvin K Y Cheng1, Benjamin J Cowling, Kwok Hung Chan
1Department of Community Medicine and School of Public Health, The University of Hong Kong, Pokfulam, Hong Kong.
Diagnostic Microbiology and Infectious Disease
|August 15, 2009
Summary
The QuickVue Influenza A + B rapid test showed good accuracy in community settings. Test sensitivity was higher with greater viral loads, indicating its effectiveness for diagnosing influenza.
Area of Science:
- Clinical diagnostics
- Virology
- Public health
Background:
- Rapid influenza diagnosis is crucial for timely patient management.
- Evaluating point-of-care tests in real-world settings is essential.
Purpose of the Study:
- To assess the performance of the QuickVue Influenza A + B rapid test in a community setting.
- To identify factors influencing the sensitivity of the rapid influenza test.
Main Methods:
- 1008 subjects from 30 Hong Kong outpatient clinics were enrolled.
- Nose and throat swabs were collected for rapid testing and laboratory reference.
- Sensitivity and specificity were calculated against viral culture.
Main Results:
- The rapid test demonstrated an overall sensitivity of 0.68 and specificity of 0.96.
- Sensitivity was significantly higher for specimens with viral loads exceeding 5 log(10) copies/mL.
- Performance in community settings was comparable to controlled environments.
Conclusions:
- The QuickVue Influenza A + B test is a reliable diagnostic tool in community point-of-care settings.
- Viral load is a key factor influencing the sensitivity of rapid influenza diagnostic tests.
