[I think my son may have autism, is there a cure for vaccine related autism?]

Either MMS or, better yet, a combination of 100% pine turpentine treatment, followed by borax treatment and high doses of probiotics.

Have to kill off the parasites first, then pull out the heavy metals (in this order to avoid heavy Herx reaction), and then repopulate the gut with healthy flora and fauna.

MMS can be very hard to tolerate. The pine turpentine on sugar cubes, like grandma used to give mom and dad to de-worm them, has zero side effects and is much more palatable. Plus, you don't have to take it nearly as many times per day.

The pine resin treatment should run for 6 weeks or so, with 4 days on and three days off each week. Four days should be consecutive. Start off with just a drop or two on a sugar cube and slowly work up to the recommended dosage for age/weight. Start counting the days of treatment once you reach the optimum dose.

The Borax treatment, 1/16th of a teaspoon of Mule Team, plus 1/2 teaspoon baking soda mixed in one liter of water for children, given in divided doses throughout the day. Again, 4 days on and 3 days off, for 6-8 weeks.

Afterward, load him up on probiotics, preferably from natural sources, being careful to avoid those containing strep varieties. (You don't even want to know about PANDA's, which looks like overnight OCD on acid. It is cured with protracted use of antibiotics, which screws up the gut even more.)

Do the footwork. Look up these treatments. Best of luck.