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. 2021 May 26;61(6):1740–1748. doi: 10.1111/trf.16435

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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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Population level longitudinal analysis of SAR‐CoV‐2 receptor‐binding domain antibodies in hospitalized patients over time. (A) Logarithmic endpoint titers from 201 samples collected from hospitalized PCR‐confirmed COVID‐19 patients are plotted over time after symptom onset. (B, C) Frequency distribution (histogram) analysis of class‐specific SARS‐CoV‐2 endpoint titers in 220 convalescent plasma units (B) and 172 longitudinal samples collected >14 days after symptom onset (shaded yellow in Figure 2(A))