Show Caption Hide Caption COVID-19: What to know about vaccines for children 5-11 COVID-19 vaccinations for children ages 5 to 11 have begun across the country. The companies on Tuesday asked the FDA to review data on the safety and efficacy of their vaccine, given in a low-dose format, for younger children. Dr. Scott Gottlieb, FDA commissioner during the Trump administration and now a Pfizer board member, said on CBS' “Face the Nation” this week that if the government authorized a two-dose vaccine for younger children, it would expedite the rollout.