Re children's vaccinates. The JVCI have to look at the ethics on whether there is benefit to children themselves having vaccines. They looked at school closures as part of this. They are still concluding there is insufficient data and on balance since the number of children at risk of covid itself is tiny and then restricted to those who have serious underlying conditions (who have now been recommended for vaccine - whether they are getting access to this is another separate debate) because the risks of side effects are unknown.
Knowns: rate of covid in children of school age and rate of serious cases
Unknowns: rate of side effects in this age group and rate of long covid.
However in terms of unknowns they will still be looking at the ranges likely based on the information we do know.
At the moment whilst there is concern about long covid, there is clearly not a concern about the rate of it and how serious it is. That isnt to say that some children wont have it.
The point here is that the JVCI are saying there isn't a sufficient risk from covid or long covid to take the risk of vaccinating a group which gets little benefit from it from an ethical point of view and therefore they can not recommend it without seeing a significant reason to or clarification that side effects from vaccinating occur at a lower level than harms attached to having covid.
The point here is two fold: if we do vaccines and get a spate of side effects we have a problem and that may actually undermine vaccine programmes across the board by undermining public confidence in vaccines.
The MHRA may have approved the vaccine (on an emergency basis) for this age group in terms of overall safety. That doesn't mean a full vaccination programme for all is appropriate / ethical though. It means that in theory if you wanted to go private it and make an informed decision about it, you could (in practice this isnt possible yet due to vaccine supplies and how they are under government control) or if you have a particular reason to have the vaccine (to protect a family member or because clinically vulnerable) you can.
When you have a mass vaccine programme which has government weight behind it, you almost need a higher level of confidence in the vaccine because you are making an informed decision on a mass scale on behalf of the population at a population level (so individual outliers need to be considered as part of this - and actually thats whats been done in terms of recommendations for those most vulnerable and where they have vulnerable family).
Personally im glad that we are looking at both ethics as well as safety for a drug on emergency approval. The unknowns clearly aren't stacking up sufficiently to justify a mass vaccine programme at this stage.