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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

About the Authors

Alessio Signorini, Alberto Maria Segre
Department of Computer Science, University of Iowa, Iowa City, Iowa, United States of America
Philip M. Polgreen
Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, Iowa, United States of America
Philip M. Polgreen
Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, Iowa, United States of America

Corresponding Author

Email: philip-polgreen@uiowa.edu

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: PMP AMS AS. Performed the experiments: PMP AMS AS. Analyzed the data: PMP AMS AS. Contributed reagents/materials/analysis tools: AMS AS. Wrote the paper: PMP AMS AS.