Parents have to buy a lot of clothes, food, sports equipment and Christmas gifts for their kids. But since early 2020 parents have been adding a new item to their shopping lists: face masks for kids.

LOS ANGELES, April 8 (Reuters) - The fast-spreading Omicron variant stoked U.S. interest in better masks for children to ward off COVID-19, and that is adding fuel to an effort that could set the ...