The CDC issued Interim Clinical Considerations for Use of COVID-19 Vaccines on 9/7/2021.
Early on, the CDC recommended use of immune-based tests for tuberculosis infection, such as the tuberculin skin test and interferon-gamma release assay be delayed by more than 4 weeks after a COVID-19 Vaccination. This was out of an abundance of caution during a period when these vaccines were new.
Given the logistical challenges faced by providers in delaying TB infection testing, the recommendation has been updated so that these tests may now be administered without regard to timing of COVID-19 vaccination.
“Testing for TB infection with one of the immune-based methods, either the tuberculin skin test (TST) or an interferon release assay (IGRA), can be done before, after, or during the same encounter as COVID-19 vaccination.”
CDC 8.31.2021 TB Testing and COVID Vaccination.pdf
The state of Pennsylvania has issued this clarification as well.
PENNSYLVANIA DEPARTMENT OF HEALTH 2021 – PAHAN – 593 – 09 – 07 – ADV