>>With flu vaccination I have a problem anyway. As you know, the flu vaccine should be composed new on every year. ...
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>I know -if I'm not wrong- that's true for just common flu vaccines. Because common flu virus is evoluties every year. But I know it's not true for H1N1.

The flu's history is statistically analysed, probably by some form of neural network, to predict what the top three forms of the flu virus are most likely to show up as the future 'seasonal flu'. Then the vaccine is produced and delivered before the flu season begins.