Nation Pfizer’s vaccine is FDA-approved for adults, but it’s still a ‘no-no’ to vaccinate kids under 12 August 24, 2021August 24, 2021 Karen Weintraub, USA TODAY Comments Off on Pfizer’s vaccine is FDA-approved for adults, but it’s still a ‘no-no’ to vaccinate kids under 12 Children under 12 have not yet been approved to receive any COVID-19 vaccine, despite the FDA's approval of the Pfizer-BioNTech shot on Monday.