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. 2023 Jun 7;10(7):ofad304. doi: 10.1093/ofid/ofad304

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© The Author(s) 2023. Published by Oxford University Press on behalf of Infectious Diseases Society of America.

This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs licence (https://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial reproduction and distribution of the work, in any medium, provided the original work is not altered or transformed in any way, and that the work is properly cited. For commercial re-use, please contact journals.permissions@oup.com

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Figure 2. — Adjusted relative vaccine effectiveness (rVE) of cell-based quadrivalent inactivated influenza vaccine (IIV4c) versus egg-based quadrivalent inactivated influenza vaccine (IIV4e) between 8 December 2019 and 7 March 2020, in adults 18–64 years of age. Abbreviation: CI, confidence interval.