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Volume 26, Number 9—September 2020
Research

Detection of H1 Swine Influenza A Virus Antibodies in Human Serum Samples by Age Group1

Elien Vandoorn, Isabel Leroux-Roels, Geert Leroux-Roels, Anna Parys, Amy Vincent, and Kristien Van ReethComments to Author 
Author affiliations: Ghent University, Merelbeke, Belgium (E. Vandoorn, A. Parys, K. Van Reeth); Ghent University and Ghent University Hospital, Ghent, Belgium (I. Leroux-Roels, G. Leroux-Roels); National Animal Disease Center, Ames, Iowa, USA (A. Vincent)

Main Article

Figure 1

Epidemiologic, phylogenetic, and antigenic relationship between influenza A test viruses from classical swine lineage 1A, human seasonal lineage 1B, and Eurasian avian lineage 1C. A) Schematic representation of the H1 IAV epidemiology and maximum-likelihood neighbor-joining phylogenetic tree of the HA1 of representative test viruses. B) Antigenic dendrogram based on antigenic distances in cross-hemagglutination inhibition assays. C) Antigenic dendrogram based on antigenic distances in cross-viru

Figure 1. Epidemiologic, phylogenetic, and antigenic relationship between influenza A test viruses from classical swine lineage 1A, human seasonal lineage 1B, and Eurasian avian lineage 1C. A) Schematic representation of the H1 IAV epidemiology and maximum-likelihood neighbor-joining phylogenetic tree of the HA1 of representative test viruses. B) Antigenic dendrogram based on antigenic distances in cross-hemagglutination inhibition assays. C) Antigenic dendrogram based on antigenic distances in cross-virus neutralization assays. IAV, influenza A virus.

Main Article

1Preliminary results from this study were presented at the Fourth International Symposium on Neglected Influenza Viruses, April 18–20, 2018, Brighton, United Kingdom; at the BELVIR conference, December 20, 2018, Brussels, Belgium; and at the 1918 Pandemic Conference, February 7–8, 2019, Ypres, Belgium.

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