MediumInfectious DiseasesPulmonary tuberculosis in Indigenous child - diagnostic approachca-mccqe1ca-ccfpca-rcpsc-im
A 5-year-old First Nations boy living in a remote northern community presents with chronic cough, weight loss, and night sweats. His uncle was recently treated for pulmonary tuberculosis. Which of the following is the most appropriate initial investigation to confirm active pulmonary TB in this child?