MRCP2-2640

A 28-year-old Caucasian man with poorly controlled HIV (recent CD4 count of 113 cells/mm3) and a negative Mantoux test presents for routine testing after his father (whom he lives with) was diagnosed with active pulmonary disease. He shows no features of active disease and on examination, his chest is clear with no overt lymphadenopathy. His vital signs are stable with a blood pressure of 132/91 mmHg, heart rate of 85 beats per minute, respiratory rate of 14 breaths per minute, oxygen saturation of 96% on air, and temperature of 36.8°C.

What is the recommended next step?