Possibly as low as 0.1 %, there is very little chance you'll get it after you have the immunization and it has had time to be effective (a couple weeks after the vaccine administration in most healthy adults). See the related question below for information about what might have happened if you do get the flu even after a flu vaccination.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.