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. 2022 Jul 28;9:940395. doi: 10.3389/fvets.2022.940395

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Copyright © 2022 Ho, Trinh, Tran, Le, Nguyen, Hoang, Pham, Conrad, Pham and Chu.

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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Clinical observation and the survival of piglets obtained passive immunity from sow vaccination. The value is presented as the mean ± standard deviation (SD). * means a statistically significant difference (p < 0.05). (A) Fecal score of piglets (n = 8 for COE/G2a-pII group and n = 2 for PBS group) was recorded daily after challenge with highly virulent NAVET/PEDV/PS6/2010 strain. (B) The body weight of piglets was calculated on the days 0 and 14 pc. (C) The clinical scores of piglets were analyzed daily after the challenge. (D) After the challenge, the survival rate of piglets was recorded daily.