No, because there are two distinct lineages, and the lineage that's is spreading right now is the less deadly lineage. That said, there have been additional mu

No, because there are two distinct lineages, and the lineage that's is spreading right now is the less deadly lineage. That said, there have been additional mutations, that may be responsible for it spreading so much, or not, or may have other effects. Monkeypox mutates much more slowly than, say, flu or SARS-CoV-2, so it seems unlikely to have a quick change in its effects, but (nearly) everything is possible in biology.