Speaking of pediatric vaccine trials, it looks like Pfizer has now also started testing down to age 6 months (this press release is over a month old, but I missed the news that their trial had started in younger children):
In participants aged 12-15 years old, BNT162b2 demonstrated 100% efficacy and robust antibody responses, exceeding those reported in trial of vaccinated 16-25 year old participants in an earlier analysis, and was well tolerated The companies plan to submit these data to the U.S. Food and Drug...
www.pfizer.com
I think Moderna already has a head-start on this age group:
clinicaltrials.gov
From unofficial rumblings I've heard, if absolutely everything goes right and the data accumulates faster than expected (which was the case with the vaccine trials in adults), Moderna could possibly submit for EAU as early as this fall for ages 12 down to 6 months, but early next year is far more likely. Interesting, though, they seem to using antibody response as their primary end-point, whereas protection from actual observed cases of COVID-19 is only secondary outcome. I wonder if this is a deliberate choice to that may allow them to apply for the EAU earlier, since they know the effective antibody levels in adults. They may argue that reaching the antibody levels is an effective proxy for immunity, and this would probably give them desirable results faster.... or maybe not, who knows.