Don't worry fatfox... it's just the 'official' (governmental / peer-reviewed etc.) analysis of his research seems not to support his findings, so it would be interesting to read work which does IYSWIM.
FWIW, I didn't think the Informed Parent site was terribly objective / informative. I always get worried when text descends from understandable info into (what IMHO) is over-simplified pseudo-science. On this page the analysis of Th1 / Th2 immunity balance is attributed to Hilary Butler "a vaccine researcher", but googling the phrase "Th2-skewed immune system" brings other sites / blogs which tend to resemble cut and pastes of VERY similar text with a few tweaks and different names floating round. To be clear, I have very very little scientific understanding of immunology / vaccination science and would be happy to be further educated from anyone with much more experience in this area who can clarify the soundness of this Th1 / Th2 'skewing' theory.
Perhaps I am just FAR TOO CYNICAL, LOL, but aren't they just trying to flog their 'download for £1.50 fact sheet' (if the information is objective and relevant to millions of people facing MMR jabs why not publish and disseminate it for free ?). Or their £15 newsletter which seems to be a cut and paste of various 'views' on vaccination ("The views which are expressed in the newsletter are not necessarily those of The Informed Parent Co. Ltd. We are simply bringing these various viewpoints to your attention.").
Skim this text to see what I mean about the same text being cut and pasted in many guises. The link at the end takes you to a 'Medicine Free Living' blog where they sell 'Transfer Factor' Immune Support pills ($55 for 50) off what appears to be a multi-level marketing 'health products' site (as well as 'Amigo Juice' 'Glyconutrients' and 'liquid zeolite' ('NCD') ... yep, all from different MLM players...
Being a curious guy, I spent a while googling Ms. Butler. I think "vaccine researcher" possibly lends her a medical air... she is a journalist. Her 'letter to the BMJ' (oft referred to in the vax discussion sites) is here . Good discussion follows ! Also look here for another post by her (It reflects an observation (by her husband, a teacher) that autism was rarely observed 20 years ago...), again another nice discussion can be followed.