In 1947, NYC was capable of vaccinating 6,350,000 people in the span of 3 weeks for a smallpox outbreak. [0] How does a person reconcile this information with t

In 1947, NYC was capable of vaccinating 6,350,000 people in the span of 3 weeks for a smallpox outbreak. [0] How does a person reconcile this information with the progress we've made so far with covid-19 vaccinations? [0]: https://en.wikipedia.org/wiki/1947_New_York_City_smallpox_outbreak https://en.wikipedia.org/wiki/1947_New_York_City_smallpox_ou...