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ModerateInfectious DiseasesPulmonary tuberculosis suspicionuk-plab-1

A 32-year-old man presents with 3 weeks of productive cough, night sweats, weight loss and haemoptysis. He migrated from a high TB prevalence country and has not had BCG vaccination. Chest X-ray shows cavitating lesions in the upper lobes. What is the most appropriate next step?

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