Tuberculin Skin Testing (TST) or Interferon Gamma Release Assay (IGRA) and COVID-19 Vaccination

Vaccination with COVID-19 vaccines may take place at any time before, after or at the same visit as the TST or IGRA test. Repeat tuberculin skin testing or IGRA (at least 4 weeks post-COVID-19 immunization) of individuals with negative TST or IGRA results for whom there is high suspicion of latent tuberculosis infection may be considered in order to avoid missing persons with TB infection.

For more information:

COVID-19 vaccine: Canadian Immunization Guide

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