Not to derail the thread (any more than it has already been periodically derailed - and yes, I have read most of the full thread and all of the OP’s posts):
What your child’s friends’ parents did was thoroughly reprehensible. They knew the CEV issue, they knew their child had an extremely infectious disease, and they deliberately chose to conceal that fact. Unforgivable.
Those who are saying, Well, the risk in the community is there anyway, she might have got it anyway, did you read @justLyra‘s devastating reply (summarised, not quoted because the thread is so long):
Yes, we know we are going to lose her, and probably before adulthood, but we are trying to do our best to put off that day.
As far as I can make out, that’s her whole focus as a mother - along with trying to juggle the almost impossible set of balls in the air to try to make sure her other kids have as much a normal life as possible. She knows that one day the juggling act is going to fail catastrophically, but please, not today. Not now. Keep juggling.
But I would just like to stand up brieflŷ, if not derailingly, for @Weepah ’s post. Yes, the CP vax is only about 90% effective in preventing infection (btw that’s about the same as mumps vax which is available on the NHS).
So, yes, kids who have been vaxed might get it anyway - but that’s the reason why EVERYONE should be vaxed. If they were, then the virus circulation would be tremendously lower, few people would get it, because almost no one would ever be exposed (because only about 10% of kids exposed would even get it). I am hoping that this makes sense.
So even if a vaccine that is only 90% effective at preventing illness, if more than 90% of people get it, then the chance of this spreading is really very small. That is why there are almost no outbreaks anymore in the US and other countries that routinely vaccinate children.
In the OP’s situation, only a fraction of children are vaccinated, so the chance of exposure is high. Her other children, even vaccinated have a high risk of bringing it home to their unvaccinated children, because if they are exposed heavily enough, or often enough, they are going to get it (since the vaccine is only 90% effective...)
But 90% is high! And would be just fine, community wide, if everyone were vaccinated. I think the NHS reasons for not vaccinating children are poor, and it will happen eventually. The NHS also lagged far behind on giving the rubella stand alone vaccine to all children and in the MMR.
Of course this does not mitigate against the original point! The OP’s “friends” deliberately exposed her daughter to a known serious risk. That’s inexcusable.
But if all children in the community were routinely vaccinated against chicken pox, that would have helped to eliminate at least one risk (and saved the OP’s child 6 days in hospital).
There are a zillion other risks, of course, and the point of the post still remains. Just standing up for the point that universal vaccination would have helped.
Just to add that I think @Nanny0gg also got that point and I am sorry if I missed others.
The point is important: if a vaccine is available, and your kids do not have medical contra indications, get them vaccinated. And lobby the NHS to add vaccines proven to be safe (like chicken pox) to be universally available.
Vaccines save lives.
(Temporary end of sermon.)