Though it is worth noting that the original commenter very nearly hit on an important point: the vaccines are not accessible enough to communities in Africa, especially in the poorest - often the most impacted - regions.
Mpox is something we could have stopped long ago with a better system of distributing/purchasing vaccines, like with tuberculosis.
It is true that when these diseases reach Europe, North America and East Asia, these medicines suddenly start being distributed far more effectively, since that’s where most of the companies that manufacture them are based, and since the countries there are wealthy enough to effectively do so, but only now that it’s an Us Problem™️