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. 2021 Jan 16;61(4):1148–1159. doi: 10.1111/trf.16261

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© 2021 AABB

This article is being made freely available through PubMed Central as part of the COVID-19 public health emergency response. It can be used for unrestricted research re-use and analysis in any form or by any means with acknowledgement of the original source, for the duration of the public health emergency.

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FRNT₅₀ titers in CCP donors (A) and FRNT₅₀ titers grouped by sequential CCP donations (B). Eighty‐seven samples were analyzed for FRNT₅₀ titers. Data are grouped by FRNT50 titer and the number of samples in each group is indicated (A). FRNT₅₀ titers correlated with CCP collection time point. The difference between groups was considered significant (P < .05) using Welchʼs test for unequal variances. ns, not significant [Color figure can be viewed at wileyonlinelibrary.com]