My point Elaine, is that ime it seems that the only child who is 'allowed' not to be vaccinated is someone mythical. When presented with a child where there is good reason not to vaccinate parents are put under enormous pressure to do so. If you can be bothered to search the archives you will find, for example that one mother was told to vaccinate repeatedly. Because of an issue her child had she insisted on seeing an immunologist who told her had she allowed her child to have then polio jab (at the time it was the oral version) then the child would have died.
I have met others with similar experiences in RL.
I feel we have very good reasons not to vaccinate our younger two. And at various times various doctors/consultants have actually agreed with us (to my surprise tbh). It hasn't stopped the occasional junior doctor spouting the party line. They seem to go away if I ask a couple of sensible questions.
And my point about herd immunity is that you are berated if you don't vaccinate 'for the greater good', to protect the vulnerable when there's no actual definition of who the vulnerable may be. And to date no attempts to identify them prior to vaccination. Personalise the vaccination program, think about it in terms of individuals, not populations.
I actually think that insisting on vaccination for the 'greater good' is wrong anyway when if it all goes pear shaped you are the one left utterly alone (and usually given a pile of abuse as well). Put in a decent, sensible response to cases of potential vaccination damage, start to support families living with severe disabilities properly, invest in adult services that you're not afraid to send your adult child to and yes I'll consider vaccinating. They need to develop the safety net first, not insist when there's nothing there to catch those who are damaged.