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Tuberculin skin test and QuantiFERON in children
Alessandra Bua1, Paola Molicotti, Sara Cannas
1Department of Biomedical Sciences, University of Sassari, Italy. ale.b76@email.it
The New Microbiologica
|May 21, 2013
Summary
The QuantiFERON-TB Gold test shows high agreement with the traditional tuberculin skin test for detecting tuberculosis infection in children. This interferon-gamma release assay offers a promising alternative for accurate diagnosis.
Area of Science:
- Infectious Diseases
- Immunology
- Pediatrics
Background:
- The tuberculin skin test (TST) was historically the primary method for diagnosing tuberculosis infection.
- Newer diagnostic tools, such as interferon-gamma release assays (IGRAs), offer potential for improved accuracy.
- QuantiFERON-TB Gold is an IGRA that detects Mycobacterium tuberculosis infection.
Purpose of the Study:
- To evaluate the performance of QuantiFERON-TB Gold in a pediatric population.
- To assess the agreement between QuantiFERON-TB Gold and the TST (Mantoux test).
Main Methods:
- Study involved 105 children, with results compared between TST and QuantiFERON-TB Gold.
- TST results included positive, negative, and dubious (Mantoux test) categories.
- QuantiFERON-TB Gold results were categorized as positive or negative.
Main Results:
- A high concordance rate of 90.57% was observed between the two diagnostic methods.
- QuantiFERON-TB Gold showed a positive result in 21 children and negative in 84.
- No statistically significant difference was found between the TST and QuantiFERON-TB Gold assays.
Conclusions:
- QuantiFERON-TB Gold demonstrates good concordance with the tuberculin skin test in children.
- IGRAs like QuantiFERON-TB Gold may offer advantages over the traditional Mantoux test for tuberculosis screening.
- Further evaluation is warranted to confirm the clinical utility and benefits of QuantiFERON-TB Gold in pediatric TB diagnosis.
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