歷史重覆，禽流抗藥
WHO recommends using Tamiflu (oseltamivir) at 75 mg twice daily to treat A(H5N1) infections and supports stockpiling in advance of a pandemic.
Oseltamivir resistance in H1N1 resulting from H274Y and N294S mutation is now widespread, as published in 2009, 25 years ago.
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