The Centers for Disease Control and Prevention recommends COVID-19 vaccines for everyone aged 12 and up. And yet, 12- to 15-year olds are the least vaccinated age group in the country, with 1 in 3 having received one dose and just 1 in 4 being fully vaccinated — about half the rate of the population as a whole.In some states, minors can legally decide for themselves whether they would like to get vaccinated. In Tennessee, for example, state law allows teens 14 and older to make medical treatment decisions without …