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. 2021 Mar 16;11:650487. doi: 10.3389/fcimb.2021.650487

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Copyright © 2021 Yuan, Yu, Jin, Wang, Gao, Ding, Zhuo, Zhu, Gao, Zheng, Ying, Xu, Kong, Lu and Lv

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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Highly variable neutralizing antibody titers of 57 convalescent plasmas from COVID-19 patients discharged in Zhejiang province from January to March in 2020. Plotted by IC₅₀ mean with SD. Neutralizing antibody in 5 convalescent plasma samples were undetectable.