Effectiveness of 2-Dose BNT162b2 (Pfizer BioNTech) mRNA Vaccine in Preventing SARS-CoV-2 Infection Among Children Aged 5-11 Years and Adolescents Aged 12-15 Years - PROTECT Cohort, July 2021-February 2022. - Fowlkes AL; Yoon SK; Lutrick K; Gwynn L; Burns J; Grant L; Phillips AL; Ellingson K; Ferraris MV; LeClair LB; Mathenge C; Yoo YM; et al. (MMWR. Morbidity and mortality weekly report, 2022)