Coronavirus cases are surging among children in the U.S. From Nov. 11 to Nov. 18, the American Academy of Pediatrics counted more than 140,000 cases among children, and new infections are up by 32 percent over the last two weeks. “Is there cause for concern? Absolutely,” said Dr. Sean O’Leary, the vice chair of the academy’s infectious diseases committee. “What’s driving the increase in kids is there is an increase in cases overall.”