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. 2022 Jul 12;18(6):2094641. doi: 10.1080/21645515.2022.2094641

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© 2022 The Author(s). Published with license by Taylor & Francis Group, LLC.

This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited, and is not altered, transformed, or built upon in any way.

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Figure 2. — ITS scatter plot of the monthly incidence rate of varicella after adjusted from 2007 to 2020 in Qingdao.Int1: July 1^st, 2013, the date of free one-dose VarV vaccination. Int2: July 1^st, 2016, the date of free two-dose VarV vaccination.