Airborne Peanut Allergy Caused by Vaccines?

Hi. My son was diagnosed with PA in Feb. 2012. He was twelve years old at the time, but I believe his story goes back to when he was six.

He WAS NOT BORN with PA. Around six (probably following the series of required vaccinations for first grade), he developed what we thought was lactose intollerance. He later began having sores in the corner of his mouth that wouldn't heal. We treated him with lactose tablets and then took him to a dermatologist who tried to treat his mouth sores topically and NEVER ONCE mentioned a food allergy. It wasn't until his assistant noticed the lactose intollerance note in his file, that SHE suggested we might want to back off on milk products. We pulled everything milk-related out of his diet (which inadvertently elimated MOST things peanut-related.) His face cleared up!

It was only after my son had sudden onset of itching and swelling to his face following the ingestion of a walnut, that I decided I needed help from an allergist. (Note that this was also shortly following a Dtap booster he received when he turned twelve.)

His skin tests came back positive for peanut, chocolate, cherry, lima beans, and peas. The allergist told me to do an actual food test at home. The chocolate was okay (got a milk/peanut free pkg.) But the peanut really caused a reaction. We now have an epi pen.

Here's the problem: My son's is so sensitive that he cannot even go into a grocery store without experience swelling of his lip, cheeks, and tongue. Most instances resolve on their own, but not always. Cases, such entering a steaming shower where sunflower seeds have been left (RV Park bathroom, or or being right next to someone who has worked in a food repackaging plant all day, can send him right into anaphylaxis. We have been lucky enough to get a prednisone down him in time to control the swelling, but it was a very close call a couple of weeks ago.

My son IS the rare case of having airborne peanut allergy. IT IS not in his head because he hasn't even been aware of the presence of an allergen until AFTER the reaction. He is not able to go back to church (hot food is always being served and has cross-contaminents that fill the air), nor can he return to baseball. FORGET the fair or Disneyland. FORGET school...we can't even go to Costco! I took him to the grocery store, left him in the car while I shopped and upon returning to the car, his lip swelled. What could I have picked up in the store? (Except I DID have pass by the bulk peanuts in order to buy strawberries.

His allergist is suggesting peanut immunotherapy (IF insurance will approve a drug called Xolair to be used simultaneously.)

I BELIEVE his peanut allergy has been CAUSED by the
vaccinations he has been subjected to. Additionally, his reactions are NOT caused by his fears.

Is there anyone else with an experience like this?