Fig. 2From: Cascade Immune Mechanisms of Protection against Mycobacterium tuberculosis (IMPAc-TB): study protocol for the Household Contact Study in the Western Cape, South AfricaSummary of screening and enrolment procedures. All contacts and control participants who are eligible to be enrolled into Cascade Household Contact study will undergo PET-CT imaging of their lungs. In addition, all eligible SARS-CoV-2-negative participants will undergo bronchoscopy in which bronchoalveolar lavage (BAL) samples are collectedBack to article page