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: Microbiology
[{'content': 'True about Swine flu\n(A)Older bird influenza vaccine is equally effective in swine flu\n(B)Ostelmavir is effective in prevention\n(C)Zanamavnr can be used for treatment\n(D)Influenza vaccine provides immunity just after vaccination \nSelect and explain. \nA. BC, B. AB, C. AD, D. BA', 'role': 'user'}, {'content': 'Answer: A \nExplanation: It emerged in march 2009 as new H1N1 virus disease\nAlso called as swine origin influenza\nft spread from person to person & caused a pandemic\nPANDEMIC INFLUENZA A (H1N1)\xa0\nCurrently susceptible to ose!tavir&zanamivir but resistant to amantadine or rimantadine\nTreatment: oseltavir adult oral dose is 75 mg twice daily for 5 days. Zanamivir dose is two inhalation {2\xa0x5 mg] twice daily for 5 days\nChemoprophylaxis:Oseltavir is drug of choice for chro mo prophylaxis. It should be given till 10 days\xa0after last exposure\n1 nfluenza vaccine only become effective about 14 days after vaccination. Those infected shortly\xa0before(l-3 days) or shortly after immunization can still get the disease.\nVaccinated individuals can also get influenza caused by a different strain of influenza virus, for which the\xa0vaccine does not provide protection', 'role': 'assistant'}]