here
The vaccines received at 18 months 'significantly aggravated' an underlying (undiagosed) mitochondrial disorder. The child was originally diagnosed with autism - the mitochondrial disorder was discovered later.
I knew someone (now lost touch - she moved away) whose dd regressed following MMR, was dxed with autism aged 2, and the last I saw her (aged 9) was being investigated for mitochondrial disorders.
I was most interested that the reactions the child had at the time (high pitched screaming, fever, arched back) were said to be normal by a paediatrician and yet they still paid out. Her regression started post vaccination.
I don't think compensation would have been granted in the UK (but the US system for vaccine compensation has always been better).