MediumInfectious DiseasesPulmonary tuberculosis in Inuit populationca-mccqe1ca-ccfp
A 27-year-old Inuk man from a fly-in community in Nunavut presents to a nursing station with 3 months of cough, night sweats and a 6-kg unintentional weight loss. He lives in an overcrowded home and his uncle was recently treated for pulmonary tuberculosis. His chest radiograph shows right upper lobe infiltrates with cavitation. According to the Canadian Tuberculosis Standards, what is the most appropriate next diagnostic step to confirm active pulmonary tuberculosis?