Monthly Follow up of Interferon Gamma Releasing Assay (IGRA) Among Health-care Workers Treating Tuberculosis (TB) Patients

Monthly Follow up of Interferon Gamma Releasing Assay Among Health-care Workers Treating TB Patients

Interferon gamma releasing assay(IGRA) is useful to diagnose latent tuberculosis. However,IGRA responses could show within-subject variability. We wanted to determine long-term IGRA variability in health-care workers who continuously expose to tuberculosis patients.

IGRA will be performed monthly in health-care workers with continuous exposure to tuberculosis patients for 1 year.

Inclusion Criteria:

• Health care workers who are continuously exposed to TB patients Age > 20 years

Exclusion Criteria:

• Pregnant Active TB Use of immunosuppressants