This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
[{'content': 'Management of non-immunized diphtheria contacts include all except: \nSelect and explain. \nA. Prophylactic penicillin, B. Daily throat examination, C. Daily throat swab culture, D. Weekly throat swab examination', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Management of Diphtheria contacts: Immunisation If primary immunisation or booster was received more than 2 years: No fuher action. If primary immunisation or booster was received more than 2 years ago: 1 booster dose If unimmunised contact: Active immunisation + 1000-2000 units Azithromycin + prophylatic penicillin/erythromycin Examination: Physical examination: Daily for 1 week after exposure Throat swabbing: Weekly for several weeks. Ref: 174', 'role': 'assistant'}]