Immunogenicity and protective efficacy of seasonal human live attenuated cold-adapted influenza virus vaccine in pigs
File(s)Holzer et al 2019 LAIV paper Frontiers.pdf (1.17 MB)
Published version
Author(s)
Type
Journal Article
Abstract
Influenza A virus infection is a global health threat to livestock and humans, causing substantial mortality and morbidity. As both pigs and humans are readily infected with influenza viruses of similar subtype, the pig is a robust and appropriate model for investigating swine and human disease. We evaluated the efficacy of the human cold-adapted 2017–2018 quadrivalent seasonal LAIV in pigs against H1N1pdm09 challenge. LAIV immunized animals showed significantly reduced viral load in nasal swabs. There was limited replication of the H1N1 component of the vaccine in the nose, a limited response to H1N1 in the lung lymph nodes and a low H1N1 serum neutralizing titer. In contrast there was better replication of the H3N2 component of the LAIV, accompanied by a stronger response to H3N2 in the tracheobronchial lymph nodes (TBLN). Our data demonstrates that a single administration of human quadrivalent LAIV shows limited replication in the nose and induces detectable responses to the H1N1 and H3N2 components. These data suggest that pigs may be a useful model for assessing LAIV against influenza A viruses.
Date Issued
2019-11-08
Date Acceptance
2019-10-22
Citation
Frontiers in Immunology, 2019, 10, pp.1-13
ISSN
1664-3224
Publisher
Frontiers Media
Start Page
1
End Page
13
Journal / Book Title
Frontiers in Immunology
Volume
10
Copyright Statement
© 2019 Holzer, Morgan, Martini, Sharma, Clark, Chiu, Salguero and Tchilian. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY)(http://creativecommons.org/licenses/by/4.0/). 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.
Sponsor
Commission of the European Communities
Defense Advanced Research Projects Agency USA
Identifier
https://www.frontiersin.org/articles/10.3389/fimmu.2019.02625/full
Grant Number
115308
Subaward No. 3130715
Subjects
1107 Immunology
Publication Status
Published
Article Number
2625
Date Publish Online
2019-11-08