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Volume 21, Number 8—August 2015
Research

Influenza A Viruses of Human Origin in Swine, Brazil

Martha I. Nelson1Comments to Author , Rejane Schaefer1, Danielle Gava, Maurício Egídio Cantão, and Janice Reis Ciacci-Zanella
Author affiliations: Fogarty International Center of the National Institutes of Health, Bethesda, Maryland, USA (M.I. Nelson); EMBRAPA Swine and Poultry, Concordia, Brazil (R. Schaefer, D. Gava, M.E. Cantão, J.R. Ciacci-Zanella)

Main Article

Figure 2

Phylogenetic relationships between human and swine influenza H3 segments. Time-scaled Bayesian maximum clade credibility (MCC) tree inferred for the hemagglutinin (H3) sequences of 463 viruses, including 4 viruses sequenced for this study from swine in Brazil, A/swine/Brazil/365-11-7/2011(H3N2), A/swine/Brazil/231-11-1/2011(H3N2), A/swine/Brazil/355-11-6/2011(H3N2), and A/swine/Brazil/365-11-6/2011(H3N2); 251 human seasonal H3 viruses collected globally during 1968–2013; and 208 closely related

Figure 2. Phylogenetic relationships between human and swine influenza H3 segments. Time-scaled Bayesian maximum clade credibility (MCC) tree inferred for the hemagglutinin (H3) sequences of 463 viruses, including 4 viruses sequenced for this study from swine in Brazil, A/swine/Brazil/365-11-7/2011(H3N2), A/swine/Brazil/231-11-1/2011(H3N2), A/swine/Brazil/355-11-6/2011(H3N2), and A/swine/Brazil/365-11-6/2011(H3N2); 251 human seasonal H3 viruses collected globally during 1968–2013; and 208 closely related swine viruses collected globally that have been studied previously (35). Gray indicates branches of human seasonal influenza A(H3N2) virus origin. Branches associated with viruses from swine are shaded by country/area of origin: light blue, Argentina; dark green, Brazil; dark blue, United States; purple, Vietnam; black, Europe; red, China; pink, Korea; orange, Thailand; light green, Mexico. Posterior probabilities >0.9 are included for key nodes.

Main Article

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Main Article

1These authors contributed equally to this article.

Page created: July 14, 2015
Page updated: July 14, 2015
Page reviewed: July 14, 2015
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