Albatross,
The death rate for Covid in UK and Germany for healthy under 18`s is one per million based on delta mutant.
Almost certainly less for Omicron.
Rate of symptomatic and asymptomatic pericarditis much higher for under 18`s particularly males.
Short term derangement of the immune system for the mRNA injections is well known but long term effects not trialled or known.
Definitely wouldn`t vaccinate for healthy under 18`s unless you are a j ab mad politician like Palaszczuk.