Genetic evidence supports sporadic and independent introductions of subtype H5 low pathogenic avian influenza A viruses from wild birds to domestic poultry in North America - Li, Lei; Bowman, Andrew; DeLiberto, Thomas J.; Killian, Mary; Krauss, Scott; Nolting, Jacqueline; Torchetti, Mia; Ramey, Andrew; Reeves, Andrew; Stallknecht, David; Webby, Richard; Wan, Xiu-Feng (Journal of Virology, 2018)