COVID in 2023 and beyond—why virus trends are more difficult to predict three years on

COVID in 2023 and beyond—why virus trends are more difficult to predict three years on In 2020, we knew very little about the novel virus that was to become known as COVID-19. Now, as we enter 2023, a search of Google Scholar produces around five million results containing the term. Duncan Robertson

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But now, those simple assumptions no longer hold. Much of the world's population is estimated to have had COVID and there are significant differences between individual levels of protection in terms of which vaccines, and how many doses, people have received around the world. In total, 13 billion vaccine doses have been administered—but not equitably.

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