The C.D.C.'s endorsement arrives just as Americans prepare for a potentially risky holiday season. Rochelle Walensky, director of the C.D.C., said in a statement Tuesday night. 'Together, with science leading the charge, we have taken another important step forward in our nation's fight against the virus that causes Covid-19,' Dr. Inoculations could begin as soon as this week. From a report: At a meeting earlier in the day, a panel of scientific advisers had unanimously recommended that the vaccine be given to these children. The Centers for Disease Control and Prevention has formally endorsed the Pfizer-BioNTech coronavirus vaccine for children aged 5 through 11, a move that will buttress defenses against a possible surge as winter arrives and ease the worries of tens of millions of pandemic-weary parents.