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. 2026 Aug 18;17:1919103. doi: 10.3389/fimmu.2026.1919103

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Copyright © 2026 Wang, Chen, Zhang, Xie, Zhu, Nurpulat and Sun.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Violin plot showing measles antibody geometric mean titers (log10 mIU/mL) by ethnicity in Xinjiang and Han ethnicity in Jiangsu, with all medians above the dashed protective threshold of two point three. — Stratified distribution of measles IgG titers across regions and ethnicities. Grouped boxplots demonstrating the interaction of geography and ethnicity on antibody levels. The horizontal blue dashed line marks the clinical protective threshold (200 mIU/mL, log10 = 2.30).