Smallpox is not extinct: https://en.wikipedia.org/wiki/Smallpox_virus_retention_controversy https://en.wikipedia.org/wiki/Smallpox_virus_retention_contr... >

Smallpox is not extinct: https://en.wikipedia.org/wiki/Smallpox_virus_retention_controversy https://en.wikipedia.org/wiki/Smallpox_virus_retention_contr... > The debate centers on whether or not the last two remnants of the virus known to cause smallpox, which are kept in tightly controlled government laboratories in the United States and Russia, should finally and irreversibly be destroyed.