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Research Article

The Use of Twitter to Track Levels of Disease Activity and Public Concern in the U.S. during the Influenza A H1N1 Pandemic

  • Alessio Signorini,

    Affiliation: Department of Computer Science, University of Iowa, Iowa City, Iowa, United States of America

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  • Alberto Maria Segre,

    Affiliation: Department of Computer Science, University of Iowa, Iowa City, Iowa, United States of America

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  • Philip M. Polgreen mail

    philip-polgreen@uiowa.edu

    Affiliations: Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, Iowa, United States of America, Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, Iowa, United States of America

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  • Published: May 04, 2011
  • DOI: 10.1371/journal.pone.0019467

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