This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory Infections, Subject name: Social & Preventive Medicine
[{'content': 'Dose of Oseltamavir (Tamiflu) for Chemoprophylaxis against H1N1 Influenza is:- \nSelect and explain. \nA. 75mg OD for 5 days, B. 75 mg OD for 7 days, C. 75 mg OD for 10 days, D. 75 mg OD for 6 weeks', 'role': 'user'}, {'content': 'Answer: C \nExplanation: H1N1 Risk factors : Child < 2yrs ; pregnancy ; old aged > 65yrs ; COPD; Chronic hea/ hepatic/ kidney disease; Pts on Aspirin therapy; Morbid obesity Lab diagnosis : -PCR Sample used : Nasopharyngeal swabs Chemoprophlaxis for H1N1 Swine flue: Oseltamivir 75 mg OD X 10 days Therapy/DOC for H1N1 Swine Flu : Oseltamivir 75mg BD X 5 Days', 'role': 'assistant'}]