Understanding the divergent evolution and epidemiology of H3N8 influenza viruses in dogs and horses.

"Conflict of interest: None declared."

"We thank the sources of the new samples used in this study, including diagnostic labs and individual private veterinarians. We wish to thank members of the Parrish Lab for critical feedback and support on this manuscript, particularly Wendy Weichert. S.E.R. and T.M.C. were supported by a project of the Kentucky Agricultural Experiment Station, Project No. KY-014067. P.R.M. was supported by the Medical Research Council of the United Kingdom (Grant No. MC_UU_12014/9), the Horserace Betting Levy Board (Grant No. 797), and the Biotechnology and Biological Sciences Research Council (Grant Nos. BB/V002821/1 and BB/V004697/1). C.R.P. (and by extension B.R.W., E.R., and I.E.H.V.) were supported by National Institutes of Health (Grant No. R01-GM080533). This work was partially funded by the Influenza Division of the Centers for Disease Control, Animal-Human Interface program, under Contract No. 75D30121P12812 to C.R.P. and L.B.G."