HOW COVID VACCINES SHAPED 2021-IN EIGHT POWERFUL CHARTS

The extraordinary vaccination of more than four billion people, and the lack of access for many others, were major forces this year - while Omicron's arrival complicated things further. The extraordinary vaccination of more than four billion people, and the lack of access for many others, were major forces this year - while Omicron's arrival complicated things further.

Automated summary

The vaccination of more than four billion people and limited access for many others were major factors this year, with Omicron's emergence further complicating the situation.