To end this destructive cycle, the UN says we must vaccinate at least 70% of the population in every country. The UN's vaccine strategy is to achieve this goal by mid-2022. This will require at least 11 billion vaccine doses – but the task is doable. 8 billion doses have already been put into people's arms, and globally, 1.5 billion doses are being manufactured every month.
The real challenge is to make sure that sufficient resources are put into distribution. Shipments to poorer countries need to be vastly increased, financial support has to be given to struggling health systems, and the size of the vaccine taskforce must be increased.
In short: no one is safe, unless everyone is safe.