Interferon gamma release assay and tuberculin skin test in the diagnosis of latent tuberculosis among health care workers – A comparative study

Health Care Workers (HCWs) are vulnerable to tuberculosis exposure. Non availability of a reliable test has resulted in underestimation of latent tuberculosis infection (LTBI) among HCWs. The aim is to detect the rate of LTBI among nursing and medical students, Compare Interferon Gamma Release Assay (IGRA) and Tuberculin Skin Test (TST), Detect conversions and reversions.