USAMRID and CDC already have the while clade of H5 antibodies produced and sequenced that’s all you need for a conventional flu vaccine targeting the whole clade of the H5 avian influenza virus. This is public knowledge all be it one would need to dig a little for it. No need to panic when H5N1 evolves the ability to jump human to human it will be weeks or months to ramp up a conventional flu vaccine for it and existing flu antiviral drugs show strong response to H5xx. Have your doctor prescribe you tamflu it’s like 80% effective against avian strains knocks the 50 in 100 deaths expected to 10 in 100 not bad odds if you are not overweight,old,diabetic,metabolic syndrome or an alcoholic those odds improve drastically.
Regarding the efficacy of Tamiflu at reducing mortality due to various influenzas, the research is not at all consistent. Studies show modest, weak, or no effect. Its ability to reduce symptom intensity and complications is more generally accepted.