You are touching on an important subject: COVID-19 is a global problem, not a set of disjoint local problems, and only a global plan of attack has any realistic chance of success. As long as things are bad in just one country and assuming normal connectivity between that one country and the rest of the world the next mutation is almost a sure thing. But even a global plan of attack is getting harder to implement every day. Yesterday the world saw almost 1.9 million new confirmed cases. Each of those is a potential breeding ground for new mutations.
- measure the spread, hospitalizations and deaths before and after, though, absent a control (see: global) there will of course always be people that will argue that it wasn't the vaccines that did it.
