I wouldn't expect the kids studies to meet their endpoints nearly as fast the adults. Unless they set far less ambitious targets, the lower incidence in kids is going to take much longer to generate the kind of robust data we saw with the adults. And if mass vaccination of adults drives the cases as low as we hope, it will take even longer.Anyone recall when the Pfizer 12-15 study began? They are apparently about ready to report, and I want to say it was 6 months total. I understand hedging (even 200m doses in 100 days is not particularly ambitious—it’s maintaining the current status quo), but still don’t get claims that vaccine won’t be ready for kids until early 2022. Perhaps they are suggesting they’ll be available to all kids by then? Obviously, studies in infants and toddlers could be expected to take longer, but going through the scheduling in my head, I can’t see the current 5-11 group finishing any later than Halloween as long as there aren’t problems.
Edit: FDA approved enrollment of kids 12-15 in mid-October 2020. So, yes, 6 months.