The good agreement between positive IGRA and active TB disease suggests a good sensitivity of IGRA. Discrepancies between IGRA and TST can be a result of higher specificity of IGRA that is not influenced by previous BCG vaccination. IGRA may be more sensitive in children younger than 48 months.
May 3, 2009
Interferon-gamma Release Assay Improves the Diagnosis of Tuberculosis in Children.
From the land of La Dolce Vita;