doomsday,
While every single child that has any chronic illness is a sad and unfortunate situation, having people push the blame on to vaccines either because they have feelings of guilt or for whatever other reason, does not mean that this is the case.
This has been studied extensively, there has been no change in autism in the groups that have withheld vaccinations, the link has been proven to not exist, despite the many trials to find them.
Furthermore, autism is normally detected around the same time that children receive their vaccines, its expected that parents with children that were diagnosed with autism between the 12-18 month range will blame the vaccine, as the anti-vax movement makes sense to them, yet the fact remains that this is the age in which autism is detected, giving or not giving the vaccine would not have any effect.