It seems unlikely. Children have a lot of direct physical contact with other children. Infections of children will frequently go undetected because they often d

It seems unlikely. Children have a lot of direct physical contact with other children. Infections of children will frequently go undetected because they often don't show symptoms. So we can only realistically have herd immunity if all children have either been infected or vaccinated. (Also note that in some countries underage persons form a majority)