thank you, rethink. sometimes just an acknowledgement of our suspicion is very healing.  i appreciate its very hard for people to be sympathetic to idea of the autism-MMR link when their lives are not affected by autism and the vast majority of the children are NOT at all affected by the vaccine. but how can anyone explain the drastic change and the extreme regression  in my nephew and so many other autistic children i have met? 
there have been a few cases in the UK where the Vaccine Damage Unit has paid compensation for MMR vaccine-induced disabilities. And the court in Italy not so long ago had paid a rather large sum to Italian parents after their son showed autism symptoms overnight. Since the threats and dangers of not vaccinating children far outweigh the few side effects it may cause to a  minority, i fully understand the medical community's hesitation to attach much significance to it.
and of course, i am not saying all autism are 'CAUSED' ( i never used the word 'caused')  by MMR. but oh well, whats the point, just forget it......the fact is a little boy we love is locked in a  world we will never understand.