Multiple Reassortment Events in the Evolutionary History of H1N1 Influenza A Virus Since 1918

• Martha I. Nelson,

  Affiliation Department of Biology, Center for Infectious Disease Dynamics, The Pennsylvania State University, University Park, Pennsylvania, United States of America

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• Cécile Viboud,

  Affiliation Fogarty International Center, National Institutes of Health, Bethesda, Maryland, United States of America

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• Lone Simonsen,

  Affiliation Department of Global Health, School of Public Health and Health Services, The George Washington University, Washington, D.C., United States of America

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• Ryan T. Bennett,

  Affiliation Wadsworth Center, New York State Department of Health, Albany, New York, United States of America

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• Sara B. Griesemer,

  Affiliation Wadsworth Center, New York State Department of Health, Albany, New York, United States of America

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• Kirsten St. George,

  Affiliation Wadsworth Center, New York State Department of Health, Albany, New York, United States of America

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• Jill Taylor,

  Affiliation Wadsworth Center, New York State Department of Health, Albany, New York, United States of America

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• David J. Spiro,

  Affiliation The J. Craig Venter Institute, Rockville, Maryland, United States of America

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• Naomi A. Sengamalay,

  Affiliation Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland, United States of America

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• Elodie Ghedin,

  Affiliation Division of Infectious Diseases, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America

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• Jeffery K. Taubenberger,

  Affiliation Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, United States of America

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• Edward C. Holmes

  * E-mail: ech15@psu.edu

  Affiliations Department of Biology, Center for Infectious Disease Dynamics, The Pennsylvania State University, University Park, Pennsylvania, United States of America, Fogarty International Center, National Institutes of Health, Bethesda, Maryland, United States of America

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