Compared to Polio and Smallpox, America's COVID-19 Vaccination Campaign Is Going Great

 https://time.com/6126442/covid-vaccine-hesitancy-polio-smallpox/

These examples suggest that sometimes, dramatically reducing the incidence of a disease requires only adequate, not absolute, compliance with a public-health regimen. In addition, the more insistently a vaccination campaign is pursued, the more doubt it raises in the minds of the hesitant about its true aims. This is especially so where authorities seem otherwise unconcerned about the public’s well-being: where basic medical care is inaccessible and living or working conditions foster ill health.