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': 'Which of the following statements is true regarding peussis - \nSelect and explain. \nA. Neurological complication rate of DPT is I in 50000, B. Vaccine efficacy is more than 95%, C. Erythromycin prevents spread of disease between children, D. The degree of polymorphonuclear Leukocytosis correlates with the severity of cough', 'role': 'user'}, {'content': 'Answer: C \nExplanation: <p> Erythromycin prevents spread of disease between children leucocytosis does not correlates with the severity of cough. Drug of choice : Erythromycin (40mg/kg QID for 10 days) Vaccine:DPT Drug of choice for cases and contacts:Erythromycin for 10 days. Reference:Park&;s textbook of preventive and social medicine,K.Park,23rd edition,page no:163-65. <\\p>', 'role': 'assistant'}]