There are no “critical points”. These vaccines have caused a vanishingly small number of "serious" (i.e. serious enough that doctors need to observe carefully)

There are no “critical points”. These vaccines have caused a vanishingly small number of "serious" (i.e. serious enough that doctors need to observe carefully) adverse effects, mostly vomiting/fever, and from what I can tell all of those resolved after a short time. There is zero evidence I can see of any long-term side effects, certainly not in significant numbers. By contrast Covid has killed hundreds of American children and caused life-altering chronic effects for thousands more, and we still don’t know what proportion of those will resolve or when. The same goes for older people (who receive a higher dose). The number of serious adverse reactions is vanishingly small, almost all of those are temporary, and the vaccine is several orders of magnitude safer than Covid. (Among older people the vaccine may have caused a few deaths, out of hundreds of millions of people vaccinated; by comparison those vaccinations have saved millions of lives and prevented millions of debilitating chronic illnesses.) If you read expert immunologists, virologists, infectious disease epidemiologists, public health experts, Covid-treating physicians, etc., they are essentially unanimous in strongly advocating everyone get vaccinated. Folks claiming these vaccines might be unsafe for children are either (a) ignorant/deluded, or (b) lying.