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. 2020 Oct 19;11:584251. doi: 10.3389/fmicb.2020.584251

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Copyright © 2020 Brochot, Demey, Touzé, Belouzard, Dubuisson, Schmit, Duverlie, Francois, Castelain and Helle.

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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Temporal profiles of NAb titers. Inpatients samples were divided into three periods groups (day 0–7, day 8–14, and day >14). (A) The temporal profiles are presented according to the severity of the disease (SD, severe disease requiring intensive care; MD, mild disease requiring non-intensive care). (B) The temporal profiles are presented according to the sex (M, male; F, female). (C) The temporal profiles are presented according to the age (< or >60 years old). Dashed lines indicate assays cut-offs for positivity and lines indicate the median for each assay. NS, not significant; *p < 0.05.