Smallpox was declared eradicated in 1980, but variola virus, which causes smallpox, still exists, and there is no known effective treatment. Full study: [ Ссылка ]
Watch more Quick Take videos: [ Ссылка ]
![](https://i.ytimg.com/vi/7KJsVKlJC7U/maxresdefault.jpg)
Smallpox was declared eradicated in 1980, but variola virus, which causes smallpox, still exists, and there is no known effective treatment. Full study: [ Ссылка ]
Watch more Quick Take videos: [ Ссылка ]