This issue seems to solve itself. When the risk is higher/more unknown in the early stage, groups that have high/known risk with Covid can take the vaccine. As

This issue seems to solve itself. When the risk is higher/more unknown in the early stage, groups that have high/known risk with Covid can take the vaccine. As time passes, more and more data will be gathered on the vaccine risk so the group that can make the correct statistical call to take the vaccine grows. Whether healthy children will take it in 1, 2, 5 or 10 years deepends on what the statistics turn out to be and whether it's required to protect others.