K.P.
What is your question here? Who diagnosed your son with Autisum? Did you take him to a specialist at some point?
Two points... pediatricians are general practitioners, not developmental specialists. I know it seems like they should be, but they are not "developmental pediatricians" unless they are certified as such.
Autism as a disorder far pre-dates vaccination. There is significant evidence that many children were diagnosed with "schizophrenia" or "mania" as early as the mid 1700's b/c the term "Autism" had not been coined. They were institutionalized and in many cases abandoned by their families, thus records are sparse and anecdotal at best. Please do some research within the realm of scientific journals... the vaccine-Autism connection has been debunked for some time. Autism is a syndrome, which by definition means a series of behavioral patterns or symptoms that occur in a cluster. It is a broad term and is more difficult to diagnose than one may think.
MANY children have speech delays and difficulty processing sensory input, but very few of those children are later diagnosed on the spectrum.
If your friend is concerned about her child's development, then she needs to have him seen by a neuropsychologist for a complete evaluation.