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. 2023 Aug 16;77(12):1723–1732. doi: 10.1093/cid/ciad458

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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 License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 3. — Injection-site and systemic reaction frequencies. Displayed are the relative frequencies of each injection site and systemic reaction type for each vaccine group (SD-QIV vs HD-TIV) following each dose. Reactions were further graded according to a mild/moderate/severe toxicity scale (grades 1 through 3, respectively), which are additionally marked by shading. Abbreviations: HD-TIV, high-dose trivalent; SD-QIV, standard-dose quadrivalent.