How to find a COVID-19 vaccine appointment for children ages 12-15 By FOX 9 Staff Vaccine appointments for youths fill up after CDC recommends Pfizer COVID-19 vaccine COVID-19 vaccine signups for at least two locations at Edina Public Schools are already filled up after the CDC recommended the Pfizer vaccine can be used for the 12- to 15-year-old age group. (FOX 9) - Beginning Thursday, May 13, children as young as 12 can start getting vaccinated against COVID-19. The U.S. Centers for Disease Control and Prevention endorsed the two-dose Pfizer vaccine for children 12-15 on Wednesday, making it the only COVID-19 vaccine currently authorized for people ages 12-17.