There's a great deal of analysis and multiple opinions on this question. It's one the committee is likely to return to. Personally, I do think that the world is on track for an average immunization level of around 70% or even exceeding it by the end of 2022. I will note, however, that the WHO's goal is that every country achieve immunization levels of 70%, ideally by this summer. That is a much more ambitious goal. I think that there are multiple countries, in particular, fragile and conflict-affected states, that will struggle to achieve that level of immunization on that timeline.
On March 21st, 2022. See this statement in context.