I think, and I may be wrong, but there was a massive outbreak of WC in a country that is over 99% vaccinated, I think Lulu posted the real stats on it a few years ago....
I've had a go, and I can't find any evidence or information about this outbreak, or what country it might have been in. Are you sure it was recent? Are you sure that it happened at all - for a modern vaccine it simply isn't credible (anything that ineffective wouldn't be worth spending health $$ on). I guess it's possible that it was an older, less effective vaccine, but even that seems unlikely to me. Vaccines are tested pretty thoroughly.

Please post a link with more information about this one.

Could you please post the links to credible info on Japans Autism rates please? I too have read masses amounts of how they vac, and how they have the best mortality rate, lowest sids rate, but have not found the Autism rate. Although that is not why I delay my vaccing.
Sure (the need for good information from reliable sources certainly goes both ways):

I'm quoting here from Wikipedia, the article on MMR Controversy:

"Japan provided a natural experiment on the subject: combined MMR vaccine was introduced in 1989, but the programme was terminated in 1993 and only single vaccines used thereafter. In March 2005 a study of over 30,000 children (278 cases) born in one district of Yokohama concluded "The incidence of all autistic spectrum disorders (ASD), and of autism, continued to rise after MMR vaccine was discontinued. The incidence of autism was higher in children born after 1992 who were not vaccinated with MMR than in children born before 1992 who were vaccinated. The incidence of autism associated with regression was the same during the use of MMR and after it was discontinued." The authors concluded: "The significance of this finding is that MMR vaccination is most unlikely to be a main cause of ASD, that it cannot explain the rise over time in the incidence of ASD, and that withdrawal of MMR in countries where it is still being used cannot be expected to lead to a reduction in the incidence of ASD.""

The study was published in the Journal of Child Psychology and Psychiatry 46 (6): 572-9., by Honda H, Shimizu Y and Rutter M (2005).

That's only one study. There have been many others done in many countries with similar results (ie no link between MMR vaccine and autism). The whole article is worth studying. It provides references and a history of the controversy for this vaccine.
MMR vaccine controversy - Wikipedia, the free encyclopedia

Jellybean you are right, everyone can find a stat that agrees with them, non and pro vac!!
The question to ask yourself (and others) is: how good is the statistic? If published in a peer-reviewed paper of the first rank, it's a lot more credible than if not.