"propublica" reporter caroline chen, who covers public health, joined me for more on what we know aboutand covid-19. so, caroline, it is on the mind of every parent, but also employers who employ parents, on exactly when children will get the vaccine where we are we at in that process? >> at this very moment, the available vaccines are only approved for 16 and older. so, not very available for children. i asked dr. fauci this question of when the vaccine might be available for more children, when it might be authorized, and he said that he was hopeful that the vaccine might be authorized for children down to first graders by the time school started in september. authorized is one thing. so, let's start with that. what does that mean? that means the f.d.a. says it is greenlit for children. that is different from there being, first of all, enough supply, and that it is administered. those are different balls of wax entirely. but authorization depends on there being data. so, then i have decided i would go and talk to manufacturs and see what clinical trials were in the works. and it reall