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Biomarker Changes Associated With Tuberculin Skin Test (Tst) Conversion: A Two-Year Longitudinal Follow-Up Study In Exposed Household Contacts, Rabia Hussain, Najeeha Talat, Firdaus Shahid, Ghaffar Dawood
Biomarker Changes Associated With Tuberculin Skin Test (Tst) Conversion: A Two-Year Longitudinal Follow-Up Study In Exposed Household Contacts, Rabia Hussain, Najeeha Talat, Firdaus Shahid, Ghaffar Dawood
Department of Pathology and Laboratory Medicine
Background:A high prevalence (50-80%) of Tuberculin Skin Test Positivity (TST+ >or=10 mm indurations) has been reported in TB endemic countries. This pool forms a huge reservoir for new incident TB cases. However, immune biomarkers associated with TST conversion are largely unknown. The objective of this study was to identify immune biomarkers associated with TST conversion after acute Mycobacterium tuberculosis (MTB)
Methodology/Principal Findings:A 24 month longitudinal study was carried out in a recently MTB exposed cohort of household contacts (HC = 93, 75% TST+). Control group consisted of unexposed community controls (EC = 59, 46%TST+). Cytokine secretion was assessed …