Nearly 180,000 children in the US were diagnosed with coronavirus infections from November 26 to December 10, bringing the cumulative total to over 1.6 million US cases since the pandemic began, the American Academy of Pediatrics said Tuesday. Children account for a little more than 12% of all Covid-19 cases in the states that report cases by age. The group, which represents pediatricians, noted there was a 23% increase in child Covid-19 cases during that period.