Unlike Covid, which is a relatively new family of virus to us, humans have hundreds of years with this family of disease
We have a much firmer foundation of understanding monkeypox and it’s long term effects
We have a much firmer foundation of understanding monkeypox and it’s long term effects
You might be thinking of the 1889-90 "flu" pandemic which has been theorized to be from a coronavirus known now as OC43, but it's not certain.
Monkeypox isn't new. There have been hundreds of human infections since the 1950s before this recent outbreak, and it is closely related (enough for complete-cross immunity) to the other orthopoxes, which are some of the most studied viruses ever. So we know a fair bit. Pox viruses do not cause a chronic and permanent infection. A person usually either recovers and becomes immune, or dies.