This was the basis of the theory of the highly controversial Dr. Wakefield, the maybe-maybe-not discredited study linking the MRA vaccine to autism.
His theory is that, in children with already weak intestinal flora, the effect of the strong triple vaccine could be the ‘straw that broke the camel’s back,’ decimating the weak cultures and ecosystem, leading to fungal growth that produced toxins that circulated to the brain, causing Autism.
I’d guess around 90% of Boingers detest Dr. Wakefield and believe his work is rubbish…but honestly, how many here knew what Wakefield’s theory even is, or how similar it is to seemingly verifiable science like this?