<prompt> Prophylactic dose of Oseltamivir for infants is?1 mgkgday3 mgkgday5 mgkgday7 mgkgday  <response>: CDC recommendations for H1N1 prophylaxis: NOTE : FOR TREATMENT ; DOSAGE IS BD FOR PROPHYLAXIS ; DOSAGE IS OD Oral oseltamivir for treatment of influenza Age Weight Dose Frequency Duration 1yr 3mg kg Twice daily 5 days 1yr 15kg 30mg 15-23kg 45mg 23-40kg 60mg 40kg 75mg Oral oseltamivir for Chemoprophylaxis 3 months-1yr 3mg kg once daily 7 days 1yr 15kg 30mg 15-23kg 45mg 23-40kg 60mg 40kg 75mg 