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Research Article

Global Patterns in Seasonal Activity of Influenza A/H3N2, A/H1N1, and B from 1997 to 2005: Viral Coexistence and Latitudinal Gradients

  • Brian S. Finkelman mail,

    To whom correspondence should be addressed. E-mail: bsf143@psu.edu

    Affiliation: Center for Infectious Disease Dynamics, Department of Biology, Eberly College of Science, 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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  • Katia Koelle,

    Affiliation: Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, Michigan, United States of America

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  • Matthew J. Ferrari,

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

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  • Nita Bharti,

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

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  • Bryan T. Grenfell

    Affiliations: Center for Infectious Disease Dynamics, Department of Biology, Eberly College of Science, 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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  • Published: December 12, 2007
  • DOI: 10.1371/journal.pone.0001296

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