i have had four children, and only one child has food allergies, he also has environmental allergies. However we are a highly atopic family with a family history of asthma , ezcema and hay fever.
mainly from my side, at least from my grandfather!
however I have ezcema , and adult onset asthma, my husband has hay fever, and asthma.
I breastfed all of my children for years, and my first was given first soilds at 4 months, other children at 6 months.
first sons had mild hay fever, outgrown by 5, youngest child has sensitve skin, dry, no huge ezcema, but hives from contact on a varity of shampoos etc.
my middle child, has a long list of food and environmental allergies.
other posts have given you good facts, not sure about the vacination one, i dont think its linked, as diets are pretty different, and plenty of other countries children die without vaccines, and other diseases, who measures rates of autism etc in the poor in africa and india?
Mind you city life does cause asthma a study in india has shown recently.
diet, is a main factor here, and of course avoidance of foods while pregant is also being studied as a cause.
african children have no peanut allergy ( results of study) and they are weaned on the stuff.
certainly since the guidance of avoidance of nuts while pregant for high risk families has been given, allergies have risen 200%
mothers with no family history are seeing a huge rise in allergies, and they have followed the avoidance guidelines.
so, all this leaves you with plenty to consider, and my final comment,
allergies can develop out of the blue at any time of life.
so dont worry about allergies, no on can predict them from happening, so there is no point. only allow your self to worry once they slap you in the face!