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. 2022 Oct 20;9:999507. doi: 10.3389/fvets.2022.999507

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Copyright © 2022 Madrid, Gu, Artiaga, Yang, Loeb, Hawkins, Castleman, Lednicky, Richt and Driver.

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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Virus levels in nasal secretions. (A) Virus titers in nasal swabs collected at −1 to 5 d.p.i. from pigs inoculated with H1N1pdm09. Data are represented as mean ± standard error of the mean (SEM). Values within days with no common superscript letters differ significantly (P < 0.05) when analyzed using Tukey's test. Values with the same superscript are not statistically different. (B) Incidence of pigs shedding virus. Survival curves with no common superscript letters differ significantly (P < 0.05) when compared by the log-rank test. Survival curves with the same superscript are not statistically different.