Harris, Kate AFreidl, Gudrun SMunoz, Olga Svon Dobschuetz, SophieDe Nardi, MarcoWieland, BarbaraKoopmans, Marion P GStärk, Katharina D Cvan Reeth, KristienDauphin, GwenMeijer, Adamde Bruin, ErwinCapua, IlariaHill, Andy AKosmider, RowenaBanks, JillStevens, Kimvan der Werf, SylvieEnouf, Vincentvan der Meulen, KarenBrown, Ian HAlexander, Dennis JBreed, Andrew C2018-01-292018-01-292017-05-181612-92102852341210.1007/s10393-017-1244-yhttp://hdl.handle.net/10029/621250Drivers and risk factors for Influenza A virus transmission across species barriers are poorly understood, despite the ever present threat to human and animal health potentially on a pandemic scale. Here we review the published evidence for epidemiological risk factors associated with influenza viruses transmitting between animal species and from animals to humans. A total of 39 papers were found with evidence of epidemiological risk factors for influenza virus transmission from animals to humans; 18 of which had some statistical measure associated with the transmission of a virus. Circumstantial or observational evidence of risk factors for transmission between animal species was found in 21 papers, including proximity to infected animals, ingestion of infected material and potential association with a species known to carry influenza virus. Only three publications were found which presented a statistical measure of an epidemiological risk factor for the transmission of influenza between animal species. This review has identified a significant gap in knowledge regarding epidemiological risk factors for the transmission of influenza viruses between animal species.eninfo:eu-repo/semantics/closedAccessArticleEcoHealth 2017; 14(2):342-60