Monkeypox is an Ortohopoxvirus that's related to smallpox and vaccinia virus.

猴痘是一种口蹄疫病毒，与天花和牛痘病毒有关。

But the vaccinia virus is only distantly related to the variola virus that causes smallpox.

但是牛痘病毒与引起天花的天花病毒关系疏远。

Vaccinia virus is actually the virus that is used in the vaccines for smallpox and monkeypox.

牛痘病毒实际上是用于天花和猴痘疫苗的病毒。