A 6 year-old child holds a sticker she received after getting the Pfizer-BioNTech COVID-19 vaccine at the Child Health Associates office in Novi, Mich., on Nov. 3. Jeff Kowalsky/AFP via Getty Images hide caption toggle caption Jeff Kowalsky/AFP via Getty Images A 6 year-old child holds a sticker she received after getting the Pfizer-BioNTech COVID-19…