Google Research

Norovirus Disease Surveillance Using Google Internet Query Share Data

  • Rishi Desai
  • Aron J. Hall
  • Benjamin A. Lopman
  • Yair Shimshoni
  • Marcus Rennick
  • Niv Efron
  • Yossi Matias
  • Manish M. Patel
  • Umesh D. Parashar
Clinical Infectious Diseases (2012)

Abstract

Google Internet query share (IQS) data for gastroenteritis-related search terms correlated strongly with contemporaneous national (R2 = 0.70) and regional (R2 = 0.74) norovirus surveillance data in the United States. IQS data may facilitate rapid identification of norovirus season onset, elevated peak activity, and potential emergence of novel strains.

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