Introduction. - In France today, the BCG vaccine remains mandatory except in cases of specific contraindications. However, BCG vaccination policy is currently undergoing changes. This article provides an overview of the current state of knowledge regarding BCG and the tuberculin skin test (TST). Key points. - Following the recent discontinuation of revaccination while maintaining primary vaccination, the question of completely phasing out BCG has been raised. This approach is part of a broader discussion on necessary adjustments to the organization of tuberculosis control and increased incentives to treat latent infections. These measures restore the tuberculin IDR to its rightful place in the screening system for tuberculosis infection. Outlook. - The arrival of new blood diagnostic tests appears to offer greater reliability. Their role and development are expanding.