As the U.S. settles deeper into the holiday season, so too is it settling into a dangerous trend of coronavirus spread. The cold winter months are pushing people indoors, where the airborne virus can spread easier than outdoors. He was referring to the country’s current battle with increased coronavirus spread. Pfizer formally requested an emergency use authorization for its COVID-19 vaccine on Nov. 20. Related: Details on when COVID-19 vaccine could be made public for useWhile it’s not totally clear who will be eligible to receive a COVID-19 vaccine and when, it is likely that school-aged children will be among the last groups in the U.S. to receive them.