Results will likely come in before September. The issue is that trials take a long time when spread is low. Spread is going to shoot up in the next 2-3 weeks. They will probably be able to wrap the trials in mid-August.

Still, it will take a couple of months for EUA. And there will (justifiably) be a bit more added scrutiny and discussions on approvals because the COVID risk to children is quite low - therefore the acceptable risk threshold from the vaccine must be incredibly small. No reason to believe it won't get EUA, but there will be a lower sense of urgency relative to the original EUA approvals given that there are not 2000 kids dying every day.