Natural Reassortment of Eurasian Avian-Like Swine H1N1 and Avian H9N2 Influenza Viruses in Pigs, China
, Samuel S.M. Cheng1
, Kristy N.T. Lam, Tsz C. Kwan, Ricky W.K. Wong, Leo H.K. Lau, Gigi Y.Z. Liu, Leo L.H. Luk, John K.C. Li, Haogao Gu, Malik Peiris
, and Leo L.M. Poon
Author affiliations: School of Public Health, The University of Hong Kong, Hong Kong, China (W. Sun, S.S.M. Cheng, K.N.T. Lam, T.C. Kwan, R.W.K. Wong, L.H.K. Lau. G.Y.Z. Liu, L.L.H. Luk, J.K.C. Li, H. Gu, M. Peiris, L.L.M. Poon); Centre for Immunology and Infection, Hong Kong (M. Peiris, L.L.M. Poon); HKU-Pasteur Research Pole, The University of Hong Kong, Hong Kong (M. Peiris, L.L.M. Poon)
Figure. Phylogenetic tree of polymerase basic 1 (A) and matrix (B) gene sequences of swine influenza viruses from China and reference sequences. Bold indicates human H7N9 and H10N8 sequences. Viral sequences generated in this study (black circles) and those downloaded from public domains (Appendix Table) were aligned by using Muscle version 3.8 (http://www.drive5.com/muscle). Phylogenetic trees were constructed by IQ-TREE 1.6.12 (http://www.iqtree.org) by using the generalized time reversible plus gamma model. Major animal viral lineages are as shown. Bootstrap values ≥80% are shown. Scale bar indicates estimated genetic distance.
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