The reasons given in the article for smallpox being able to be eradicated the first time was because a) It has no animal reservoirs b) The latent period of in

The reasons given in the article for smallpox being able to be eradicated the first time was because a) It has no animal reservoirs b) The latent period of infection is very short c) There's an effective vaccine None of those things would be different the second time around, unless the viruses itself was changed.