Teenagers are twice as likely to be diagnosed with Covid-19 than younger kids, according to a report released Monday by the CDC. The findings could have implications for educators as they wrestle with how to reopen schools safely, as well as for public health officials charged with figuring out how to prioritize Covid-19 vaccine distribution. … The new CDC report focuses on 277,285 infections among school-age children between March 1 and mid-September. The majority, 63 percent, were over age 12, compared with just 37 percent between the ages of 5 and 11.