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: Social & Preventive Medicine
[{'content': 'Which of the following is not a pa of control measures for diphtheria ? \nSelect and explain. \nA. Treatment of cases with erythromycin, B. Treatment of carriers with antitoxin, C. Isolation of cases, D. Regular immunization of under-fives', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Treatment of carriers with antitoxin Control of diphtheria o Control diphtheria requires :? i) Control in cases and carrier ii) Control for contacts (prophylaxis for contact) iii) Prophylaxis for community --> by vaccination Control in cases and carrier I) Early diagnosis By nose & throat examination and culture. 2) Isolation ---> For at least 14 days or until proved free of infection, i.e. at least 2 consecutive nose and throat swabs, taken 24 hours apa, should be negative before terminating isolation. 3) Treatment i) Cases ---> Diphtheria antitoxin plus penicillin or erythromycin. ii) Carrier ----> Erythromycin", 'role': 'assistant'}]