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. 2021 May 3;7(7):924–935. doi: 10.1016/j.eng.2021.03.014

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© 2021 THE AUTHORS

Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.

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Fig. 3 — Impact of a vaccine that is 90% effective at reducing infection risk as a function of total vaccine supply. The y-axis represents (a) the percentage reduction in cases, (b) the percentage reduction in deaths, and (c) the percentage reduction in years of life lost compared to a scenario with no vaccine. The x-axis represents the percentage of the population that would eventually be vaccinated.