Nation FDA authorizes Pfizer-BioNTech booster for kids ages 16-17; delta is the problem, not omicron: Live COVID updates December 9, 2021December 9, 2021 John Bacon, Celina Tebor and Jorge L. Ortiz, USA TODAY Comments Off on FDA authorizes Pfizer-BioNTech booster for kids ages 16-17; delta is the problem, not omicron: Live COVID updates The FDA authorized booster shots of Pfizer's vaccine for 16- and 17-year-olds at least six months after their initial doses. COVID news.