Whole-genome reassortment of human-origin swine influenza viruses.

Summary of reassortment events involving 31 human-like swine influenza virus isolates. The phylogenetic position of each isolate or cluster of related isolates is classified for each segment according to nomenclature and color-coding used in Figs. 3 and 4 and Figs. S2, S3, S4, S5, S6, and S7: human H1N1 (huH1N1), human H1N2 (huH1N2), human H3N2 (huH3N2), classical swine influenza viruses (classical), triple reassortant swine viruses (TRIG for internal genes or Triple Reassort for NA), or the clade of triple reassortant swine viruses that acquired a human H3N2-origin N2 (‘Clade IV’, Fig. 4). Reassortment events 1–3 have been described previously [12], [13], and 4–7 are novel in this study.
*represents A/sw/IL/00685/2005(H1N1), A/sw/NC/00573/2005(H1N1), and A/sw/Minnesota/07002083/2007(H1N1)
**represents a cluster of 21 human H1N2-origin influenza viruses with a similar reassortment pattern that are listed in Table S6.