JAMA Pediatrics study concludes children should not be forced to wear face masks.

https://jamanetwork.com/journals/jamapediatrics/fullarticle/2781743In the discussion section, the researchers conclude that complaints reported in a previous survey of thousands of German parents (kids experiencing headaches, difficultly concentrating, drowsiness, etc.) could be explained by the elevated CO2 levels. The study concludes: “We suggest that decision-makers weigh the hard evidence produced by these experimental measurements accordingly, which suggest that children should not be forced to wear face masks.”

The caveats here are that this study was very small, only a few dozen kids. Assume there will be some pushback from other doctors.