Sbina Bavari, Susan Payne, Alexander Bukreyev, Arvind Varsani, Víctor Romanowski, Kartik Chandran, Ralf G. Dietzgen, Mark D. Stenglein, Anna N. Clawson, Sead Sabanadzovic, Gael Kurath, Andrea Maisner, Peter J. Walker, Ralf Dürrwald, Juan Carlos de la Torre, Eric M. Leroy, Mária Benko, Keizo Tomonaga, Gary P. Kobinger, Robert A. Lamb, Hideki Kondo, F. Murilo Zerbini, Martin Schwemmle, Robert B. Tesh, Gaya K. Amarasinghe, Andrew J. Easton, Michael J. Buchmeier, Jean-Paul Gonzalez, Anna E. Whitfield, Nikos Vasilakis, Jonathan S. Towner, Pierre Formenty, Jens H. Kuhn, Norbert Nowotny, Roger Hewson, Ayato Takada, Mart Krupovic, Igor S. Lukashevich, David M. Stone, Clarence J. Peters, Sheli R. Radoshitzky, Bertus K. Rima, Janusz T. Paweska, Masayuki Horie, Christopher S. Clegg, Victoria Wahl-Jensen, Christopher F. Basler, Sébastian Emonet, Charles H. Calisher, Lin-Fa Wang, Rémi N. Charrel, Jean L. Patterson, Elodie Ghedin, Dennis Rubbenstroth, Dàohóng Jiāng, Sergey V. Netesov, Hélène Sanfaçon, Thomas S. Postler, Ron A. M. Fouchier, Peter L. Collins, Noël Tordo, Maria S. Salvato, John M. Dye, Arcady Mushegian, Sophie J. Smither, Joseph L. DeRisi, Olga Dolnik, Kim R. Blasdell, Balázs Harrach, Viktor E. Volchkov, Thomas Briese, Andrew M. Kropinski, Columbia University College of Physicians and Surgeons, Integrated Research Facility at Fort Detrick, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Washington University School of Medicine (WUSM), University of Washington [Seattle], Georgia State University, University System of Georgia (USG), Army Medical Research Institute of Infectious Diseases [USA] (USAMRIID), Institute for Soil Sciences and Agricultural Chemistry (ATK TAKI), Centre for Agricultural Research [Budapest] (ATK), Hungarian Academy of Sciences (MTA)-Hungarian Academy of Sciences (MTA), Commonwealth Scientific and Industrial Research Organisation [Canberra] (CSIRO), Columbia Mailman School of Public Health, University of California [Irvine] (UCI), University of California, The University of Texas Medical Branch (UTMB), College of Veterinary Medicine and Biomedical Sciences, Colorado State University [Fort Collins] (CSU), Albert Einstein College of Medicine [New York], Emergence des Pathologies Virales (EPV), Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM), Institut Hospitalier Universitaire Méditerranée Infection (IHU Marseille), Les Mandinaux, National Institute of Allergy and Infectious Diseases [Bethesda] (NIAID-NIH), National Institutes of Health [Bethesda] (NIH), Department of Immunology and Microbial Science, Scripps Research Institute, Department of Medicine [San Francisco], University of California [San Francisco] (UCSF), University of California-University of California, Queensland Alliance for Agriculture and Food Innovation (QAAFI), University of Queensland [Brisbane], Philipps University of Marburg, IDT Biologika, School of Life Sciences, Warwick University, Unité de Virologie, Institut de Recherche Biomédicale des Armées (IRBA), Organisation Mondiale de la Santé / World Health Organization Office (OMS / WHO), Department of Viroscience [Rotterdam, The Netherlands], Erasmus University Medical Center [Rotterdam] (Erasmus MC), Center for Genomics and Systems Biology, Department of Biology [New York], New York University [New York] (NYU), NYU System (NYU)-NYU System (NYU)-New York University [New York] (NYU), NYU System (NYU)-NYU System (NYU), Health for Development, Public Health England [Salisbury] (PHE), Kagoshima University, State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Research Centre in Infectious Diseases, CHUL Research Centre and Department of Microbiology and Immunology, Université Laval [Québec] (ULaval)-Faculty of Medicine, Institute of Plant Science and Resources, Okayama University, University of Guelph, Biologie Moléculaire du Gène chez les Extrêmophiles (BMGE), Institut Pasteur [Paris], US Geological Survey [Seattle], United States Geological Survey [Reston] (USGS), Northwestern University [Evanston], Centre International de Recherches Médicales de Franceville (CIRMF), Department of Pharmacology and Toxicology, University of Louisville, Department of Molecular Biosciences, Institute for Cellular and Molecular Biology, Center for Infectious Disease, University of Texas at Austin [Austin], Novosibirsk State University (NSU), University of Veterinary Medicine [Vienna] (Vetmeduni), Mohammed Bin Rashid University of Medicine and Health Sciences (MBRU), Texas Biomedical Research Institute [San Antonio, TX], Texas A&M University System, National Institute for Communicable Diseases [Johannesburg] (NICD), Queen's University [Belfast] (QUB), Instituto de Biotecnología y Biología Molecular [La Plata] (IBBM), Consejo Nacional de Investigaciones Científicas y Técnicas [Buenos Aires] (CONICET)-Facultad de Ciencias Exactas [La Plata], Universidad Nacional de la Plata [Argentine] (UNLP)-Universidad Nacional de la Plata [Argentine] (UNLP), University of Freiburg [Freiburg], Department of Biochemistry, Molecular Biology, Entomology and Plant Pathology [Mstate, USA] (BCH-EPP), Mississippi State University [Mississippi], Summerland Research and Development Centre, Agriculture and Agri-Food [Ottawa] (AAFC), University of Maryland School of Medicine, University of Maryland System, Defence Science and Technology Laboratory (Dstl), Ministry of Defence (UK) (MOD), Department of Microbiology, Immunology and Pathology, Centre for Environment, Fisheries and Aquaculture Science [Weymouth] (CEFAS), Hokkaido University [Sapporo, Japan], Institute for Virus Research, Kyoto University [Kyoto], Stratégies antivirales, Institut Pasteur de Guinée, Réseau International des Instituts Pasteur (RIIP), Viral Special Pathogens Branch, Centers for Disease Control and Prevention-WHO Collaborative Centre for Viral Hemorrhagic Fevers, Bases moléculaires de la pathogénicité virale – Molecular Basis of Viral Pathogenicity (BMPV), Centre International de Recherche en Infectiologie - UMR (CIRI), École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), National Biodefense Analysis and Countermeasures Center [Frederick], U.S. Social Security Administration, CSIRO Health & Biosecurity, Department of Agriculture, Fisheries and Forestry, Ecoscience Precinct, GPO Box 267, Brisbane, Duke-NUS Medical School [Singapore], Center for Fundamental and Applied Microbiomics, Arizona State University [Tempe] (ASU)-Biodesign Institute, Kansas State University, Departamento de Fitopatologia [Viçosa, Brazil] (BIOAGRO), Universidade Federal de Vicosa (UFV), This work was supported in part through Battelle Memorial Institute’s prime contract with the US National Institute of Allergy and Infectious Diseases (NIAID) under Contract No. HHSN272200700016I. A subcontractor to Battelle Memorial Institute who performed this work is J.H.K., an employee of Tunnell Government Services, Inc. This work was also funded in part under National Institutes of Health (NIH) contract HHSN272201000040I/HHSN27200004/D04 and R24AI120942 (N.V., R.B.T.), and the National Science Foundation (NSF) Individual Research and Development (IR/D) program (A.R.M.)., We thank Laura Bollinger (NIH/NIAID Integrated Research Facility at Fort Detrick, Frederick, MD, USA) for critically editing the manuscript, Andrew J. Davison (MRC – University of Glasgow Centre for Virus Research, Glasgow, UK) and Michael J. Adams (Department of Plant Pathology and Microbiology, Rothamsted Research, Harpenden, Herts, UK) of the ICTV Executive Committee for suggestions on manuscript improvement, and Arya Ariël Kuhn for sustained vocal support and (dia)critical remarks, Albert Einstein College of Medicine, Institut Hospitalier Universitaire Méditerranée Infection (IHU AMU), Queensland Alliance for Agriculture and Food Innovation, University of Queensland (UQ), Public Health England [Porton Down, Salisbury], Faculty of Medicine-Laval University [Québec], Okayama University [Okayama], Centre International de Recherches Médicales de Franceville, Texas Biomedical Research Institute [San Antonio, Texas], A&M University, National Institute for Communicable Diseases (NICD), Centre for Experimental Medicine [Queen’s University of Belfast], Department of Biochemistry, Molecular Biology, Entomology and Plant Pathology, Hokkaido University, Bases moléculaires de la pathogénicité virale – Molecular Basis of Viral Pathogenicity, Institut National de la Santé et de la Recherche Médicale (INSERM)-École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Duke NUS Medical School, Departamento de Fitopatologia/BIOAGRO, Virology, U.S. Army Medical Research Institute of Infectious Diseases (USAMRIID), Columbia University [New York], University of California [Irvine] (UC Irvine), University of California (UC), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)-Institut National de la Santé et de la Recherche Médicale (INSERM), The Scripps Research Institute [La Jolla, San Diego], University of California [San Francisco] (UC San Francisco), University of California (UC)-University of California (UC), Philipps Universität Marburg = Philipps University of Marburg, University of Warwick [Coventry], Institut de Recherche Biomédicale des Armées [Brétigny-sur-Orge] (IRBA), Huazhong Agricultural University [Wuhan] (HZAU), Institut Pasteur [Paris] (IP), Agriculture and Agri-Food (AAFC), Kyoto University, Centre International de Recherche en Infectiologie (CIRI), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), and Universidade Federal de Viçosa = Federal University of Viçosa (UFV)