Global impact of the first year of COVID-19 vaccination: a mathematical modelling study (23 June 2022)

Summary

The first COVID-19 vaccine outside a clinical trial setting was administered on 8 December 2020. To ensure global vaccine equity, vaccine targets were set by the COVID-19 Vaccines Global Access (COVAX) Facility and WHO. However, due to vaccine shortfalls, these targets were not achieved by the end of 2021. Watson et al. aimed to quantify the global impact of the first year of COVID-19 vaccination programmes. The study found that COVID-19 vaccination has substantially altered the course of the pandemic, saving tens of millions of lives globally. However, inadequate access to vaccines in low-income countries has limited the impact in these settings, reinforcing the need for global vaccine equity and coverage.