I'd just like to add my own pov if I may.
I usually try to stay off health threads and I always namechange if I'm revealing my profession but I just wanted to post on this thread.
I'm a paediatrican, well a Specialist registrar, got another 4 years to go before consultancy.
I agree with several of the posts on this thread, including both flumpytina and jimjams. I would particularly agree with jimjams in that there is no evidence that MMR is a problem for the very very vast majority of children but that for a very small number of children it may trigger autism, autism that may have been triggered by another environmental hit even if the child hadn't had MMR.
This clearly makes it difficult for parents; is my child susceptible? is the new question. Unfortunately the answer is that no one knows for certain although jimjams gives some possible risk factors that parents may well want to consider. This must be balanced out with the knowledge that every child is susceptible to measles, mumps and rubella and the horrendous complications that these diseases can cause. Only each parent can decide what is best for their children. I know that I will be immunising my dd and that if any parents I meet at work ask me then I will be happy to tell them this, explaining why.
I think that the whole MMR debate in itself raises a lot of interesting points:
Giving something to your child that carries a tiny risk of harm is probably harder than not doing something, even though the ommission carries a higher risk of harm.
The media present scientific information very, very badly. If I feel angry with Andrew Wakefield et al. for anything it is the way that they presented their research findings at a press conference. First the media whoop up the controversy around MMR, then once the tide of information begins to turn, they demonise anyone who's child hasn't had the vaccine and cry about outbreaks of disease.
The public in general understand risk very badly. Risk is presented very badly, people expect medical intervention to be entirely risk free when it can never be yet they expect to win the lottery when they buy a ticket. I've had a job where I've had to explain to parents that their premature baby stood an approximate 90% chance of survival but I know (from speaking to many parents later) that for them the risk feels like 50:50. Their baby will either live or die. Similarly, though not with the same figures, for parents despite consciously "knowing" that the risk of MMR to their child may be very tiny it is likely to feel 50:50 as their child will either have autism or not, develop one of MMR or not. You can't get 2% of measles or autism although obviously you an be affected to varying degrees. I'm not sure if I'm expressing myself very well here but I hope tyhat I'm not upsetting anyone .
Although we all understand that large scale research, properly conducted, that truly answers the questions that it sets out to answer, is likely to give us the most robust information we cannot discount personal experience and how it informs our decision making. Personal experience brings home to us the possiblities of what could happen and what those consequences might really mean for us. At best they make us more able to make the right decision for our own individual circumstances.
Sorry about the length of this post but I've kind of let it all out iyswim . Not sure that I've helped the op though .