Renewed debate over autism/vaccine link

I dont necessarily agree with the vaccine theory. My neighbor has a son who is autistic. He was never vaccinated due to his sister having a rare form of cancer, which prevented him from receiving innoculations due to her immune system vulnerability. The family is doing the diet thing, keeping him off of all 8 major allergens and rigorous therapy. My wife and I have seen a marked improvement in him in just over 6 months of diet and therapy and I hope the progression continues.