At the end of the Wikipedia article: https://en.wikipedia.org/wiki/Monkeypox#2022_outbreak https://en.wikipedia.org/wiki/Monkeypox#2022_outbreak they mention

At the end of the Wikipedia article: https://en.wikipedia.org/wiki/Monkeypox#2022_outbreak https://en.wikipedia.org/wiki/Monkeypox#2022_outbreak they mention the monkeypox virus being used by Russia in their bioweapons program. I don't believe it would make any sense for them to use it now, but on the other hand, Putin hasn't been behaving rationally for a while.