Hubby has had these shots these past 4 years, together with quite a severe flu attack each year. I'm going to continue to pass.
Re-used since I am lazy:
It's a vaccine tailored to a specific strain of the flu. It's not a guarantee. Was he tested by a doctor to see if you had the strain of flu you were vaccinated against? Or any flu at all, in fact? The vaccine requires your body to develop to proper immune response to prevent a real flu infection, if that doesn't happe, the vaccine will not help you. It also takes about 2 weeks for your body to develop anti-bodies against the flu you were vaccinated against. If you come into contact with the flu shortly after the vaccination, you will still get sick.
That does not mean, however, it is not good for the general population.
Entirely Possible, please get out of here with your science facts and data. I prefer to use my gut instinct and garbage science I learned from Oprah and Dr. Oz.
Perhaps instead we should give out enemes filled with curry, scotch bonnet pepper sauce and orange juice to keep the flu away.