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. 2021 Apr 9:fdab093. doi: 10.1093/pubmed/fdab093

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© The Author(s) 2021. Published by Oxford University Press on behalf of Faculty of Public Health. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com

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Fig. 1 — Timeline of anti-vaccine group Facebook activity and milestones of the COVID-19 vaccine effort, February–May 2020 with selected examples of anti-vaccine group posts.