This is for you Godz46

vaccines are very different from pills. You can't store vaccines but the cdn gov't orders vacines from companies and to make sure enough are made, they agree to buy the rest if they are not used. The us doesn't do that, but i'm sure a little change in the proper legislation would fix that.
Second, it's best if you pay throught taxes because at least you're sure enough will be bought. Vaccination is a differant beast to conquer. For a vaccine to be effective, a minimum percentage of the population must be immunized or else the money spent on immunization went to waste. For exemple, if there is a mumps outbreak. Get your kid vaccinated (even if they cry and hate you) because you need a vaccination rate of 75% for the vaccine to be effective against the total population (i read this about a mumps scare in london. That's were i got the #)