Most just say that at present there is just no evidence supporting a connection, and no evidence showing no connection exists:
http://specialchildren.about.com/gi/dynamic/offsite.htm?zi=1/XJ&sdn=specialchildren&cdn=parenting&tm=48&f=10&su=p284.8.150.ip_&tt=15&bt=1&bts=1&zu=http%3A//www.autismwebsite.com/ari/newsletter/iom.htmThe IOM report actually said: “Although the committee has concluded that the evidence favors rejection of the causal relationship at the population level between MMR vaccine and ASD, the committee recommends that this issue receive continued attention.... its conclusion does not exclude the possibility that MMR vaccine could contribute to ASD in a small number of children...”The Actual IOM Report is here:
http://specialchildren.about.com/gi/dynamic/offsite.htm?zi=1/XJ&sdn=specialchildren&cdn=parenting&tm=6&f=10&su=p284.8.150.ip_&tt=15&bt=1&bts=1&zu=http%3A//www.nap.edu/books/030909237X/htmlThe best paragraph was on page of the report:
here are many examples in medicine of disorders defined by a constellation of symptoms that have multiple etiologies, and autism is likely to be among them. Determining a specific cause in the individual is impossible unless the etiology is known and there is a biological marker. Determining causality with population-based methods such as epidemiological analyses requires either a well-defined at-risk population or a large effect in the general population. Absent biomarkers, well-defined risk factors, or large effect sizes, the committee cannot rule out, based on the epidemiological evidence, the possibility that vaccines contribute to autism in some small subset or very unusual circumstances. However, there is currently no evidence to support this hypothesis either.Basically, the report indicates that mercury is prob ally NOT related, but based on the report it read it can NOT exclude the possibility of a connection. Thus the issue is still alive and well.
As to other cases of Autism and Vaccines in March 2008 the Government conceded that the vaccine may have been involved in one child's case. The decision was very that child specific and tied in with another problem the child had, but the vaccine was somewhat involved:
http://www.msnbc.msn.com/id/23519029/http://www.webmd.com/brain/autism/news/20080306/dad-in-autism-vaccine-case-speaks-outhttp://ap.google.com/article/ALeqM5guh37t0Mvb_FztDKIFZs7a3het8QD8V8N98O0The Government Position is there is no connection:
http://www.nichd.nih.gov/publications/pubs/autism/mmr/Studies has failed to find a "Scientific" reason for any such connection:
http://www.msnbc.msn.com/id/22542677/http://www.msnbc.msn.com/id/22542677/Please note by Scientific the report basically mean a blind side test, i.e. a group who had the vaccine and came down with autism, and a group with everything else the same, except no vaccine. Given that most people get they kids vaccinated it is hard to have a blind side test. The Scandinavian came close, where they compared populations of children vaccinated after the introduction of the Vaccine and the population of Children before that date in the same area. The problem here is we are talking of a small population AND two different time periods (Pre-1981 and post-1981). This test shows no difference, but still two different time periods.
My own opinion is that the higher Autism rate is tied in with the switch from burning bituminous coal (Which had a low Mercury content AND the ash from Bituminous coal ABSORBED Mercury) to western ligate coal, with higher Mercury content (And ash that does NOT absorb Mercury). Thus since about 1980 (about when this switch occurred in the US) you had more mercury in the air, which leads to more cases of Autism. In such a situation the vaccine may just be a trigger and the cause is the higher mercury in ligate coal.
My point is while the evidence is slowly building to show no connection between Autism and Vaccines, a connection had NOT yet been ruled out. The mercury in the Vaccine may just trigger some people to go Autistic (Like the case in March 2008) but had no connections with most children who are autistic. Thus the evidence right now does NOT show a connection, it also does NOT exclude a connection. More research is needed, not blanket statements that Vaccine and Autism has absolutely no connection.