Prevalence of BCG scar among vaccinated children and its correlation with Mantoux skin test at Omdawanban area, Sudan.

Purpose: Tuberculosis (TB) remains a significant public health concern globally. Bacille Calmette-Guérin (BCG) vaccination is widely used, but scar formation post-vaccination is not universal, which raises concerns about its efficacy. The Mantoux test is used to assess the immune response following BCG vaccination.