CDC needs to answer this question.

We must understand how the agency arrived at its child masking guidance.

Throughout the pandemic, there has been an extreme trans-Atlantic divide on masking children. While European countries never masked toddlers and mostly didn’t mask primary school children — even on public transportation and planes — the United States has consistently masked children as young as two, per CDC guidance. ECDC — the EU/EEA’s CDC — only recommended children over 12 mask at school.