A 28-year-old healthcare worker undergoes routine tuberculos…
A 28-year-old healthcare worker undergoes routine tuberculosis (TB) screening and has a positive tuberculin skin test (TST) but denies cough, fever, weight loss, or night sweats. A chest X-ray is normal, and sputum cultures are negative for Mycobacterium tuberculosis. The patient is concerned about transmitting TB to others and asks if they are contagious. The healthcare provider informed the patient he likely has latent TB and can transmit the infection.