This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
[{'content': 'False-negative tuberculin test is seen in all except: \nSelect and explain. \nA. After 4-6 weeks of measles attack, B. Immunodeficiency state, C. Miliary tuberculosis, D. Atypical mycobacterial infection', 'role': 'user'}, {'content': "Answer: D \nExplanation: • Positive: A positive tuberculin test indicates hypersensitivity to tuberculoprotein, denoting infection with the tubercle bacilli or prior immunisation with BCG. The test becomes positive\xa04-6 weeks after infection or immunisation. Tuberculin allergy wanes gradually and disappears after 4-5 years in the absence of subsequent contact with the mycobacteria. In endemic areas, the allergy is maintained by repeated contacts with the bacilli.\xa0\n• Negative: Persons who have never had contact or been exposed to the tubercle bacilli are tuberculin-negative negative tests (anergy) may be seen in miliary tuberculosis, convalescence from some viral\xa0infections like measles, lymphoreticular malignancy, sarcoidosis, severe malnutrition, immunosuppressive therapy or impaired cell-mediated immunity.\xa0\n• False negative results may also be due to inactive PPD preparations and improper injection technique.\xa0\n• False positive reactions may be seen in infections with some relatated mycobacteria ('atypical' mycobacteria).\xa0\n\xa0\nRef: Ananthanarayana 8th ed page 360", 'role': 'assistant'}]