That sounds completely ridiculous... The situation in america seems quite bad concerning vaccines...
I only got a couple vaccines as a kid, but never heard of the need to take flue shots.. The flue is like the most benign disease in the world, why would people ever think it's needed to take a shot against it?
If you are under age and have absolutely no way to refuse those shots then you should spend extra time healing yourself spiritually before and after you get the shot, breathe in solar energy, clean your aura thouroughly and protect yourself as best you can to prevent those shots from harming you.
Check this link for more information on spiritual healing:
http://www.angelfire.com/empire/serpent ... aling.html
If there is anything you can think of that might allow you to refuse the vaccinations, then do it for your own health, they are extremely bad for you... However don't get paranoid when you do get them, because any spiritual and physical damage they might do can be healed over time and with spiritual healing combined with a healthy life style.
As for other medicines, don't take them unless you really cannot go without. Even things like asperin which are always taken the moment someone get's a miniscule fever are really bad for you in many ways...
If you get badly ill and need medical treatment, then take it as it is still better than nothing, but try to learn to heal yourself spiritually. That way most things can easily be healed in a matter of hours to days.
Fever won't ever be a problem for you, same as flue or headaches or stomach aches from mild food poisoning and such.. All can be healed quite easily by using the technique in the above link in a short amount of time, so long as you do daily power meditation.
As for allergy meds, make sure to have them on hand of course, because some allergies can be exremely aggresive and spiritual healing is very hard to do in such a crisis situation, so have them on hand and take them of needed. I used to have a bad nut allergy, eating any tiny crumb of nut could make me go into anafalactyc shock or at least make me very sick (Swell my throat, blocking my air ways, severe stomach ache etc) and could kill me if I didn't have medicine on hand, but I don't need medicine for it anymore right now. The last time I took it I prevented the anafalactyc shock using satanic healing alone and stopped the entire reaction from causing problems in a matter of minutes.
Satanic healing is very potent when you empower yourself daily for a while with power meditations, but still if you need it you should still take medicine, despite medicine usually having some harmful side effects or disgusting chemicals in their ingredients..