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. 2021 Dec 20;81:102578. doi: 10.1016/j.jhealeco.2021.102578

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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. 2 — Share of population with any COVID-19 vaccination over time. Notes: Panel (a) of Fig. 2 shows time series graphs for the share of population that had received at least a first dose of any COVID-19 vaccination by region and date. Panel (b) shows the estimated difference between Ohio and the synthetic control. The grey shading indicates 95 percent confidence intervals for each post-treatment date, calculated using conformal inference.