The fast-spreading Omicron variant stoked US interest in better masks for children to ward off Covid-19, and that is adding fuel to an effort that could set the stage for domestic oversight of their quality.
Adult N95 masks are federally regulated and considered a gold standard. They were among the "better masks" US health officials recommended in January to protect against Omicron.
For children, no comparable US-regulated mask exists, and some concerned parents turned to kid-sized masks made to South Korea's KF94 or China's KN95 standards instead...