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. 2024 Apr 4;9(4):e014466. doi: 10.1136/bmjgh-2023-014466

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© Author(s) (or their employer(s)) 2024. Re-use permitted under CC BY. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution 4.0 Unported (CC BY 4.0) license, which permits others to copy, redistribute, remix, transform and build upon this work for any purpose, provided the original work is properly cited, a link to the licence is given, and indication of whether changes were made. See: https://creativecommons.org/licenses/by/4.0/.

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Examples of visual aids illustrating information on COVID-19 vaccine effectiveness (VE). (A) VE of primary series and booster vaccination against the Delta VOC. (B) VE of primary series and first booster vaccination against the Omicron VOC. Created by the WHO.³² VOC, variants of concern.