Did Jenner Really Save Us Or Was Nature Already On the Case?

‘Smallpox’ National Library of Medicine If Jenner had been right, and infant vaccination gave lifelong immunity, then we would have no problem today, but duration of immunity to prevent attack is very variable and relatively short. Dixon, C. W., (1962, 342) https://www.nlm.nih.gov/nichsr/esmallpox/smallpox_dixon.pdf