Yyvian Hayashi, 9, receives her first dose of the Pfizer-BioNTech vaccine for children 5-11 on Nov. 20, 2021, in Springfield, Missouri. NATHAN PAPES/SPRINGFIELD NEWS-LEADER
Even in the days of smallpox, some people objected to vaccinations. Benjamin Franklin apparently “long regretted” his decision not to inoculate his oldest son, who…
