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Norovirus Disease Surveillance Using Google Internet Query Share Data

  1. Umesh D. Parashar1
  1. 1Centers for Disease Control and Prevention, Atlanta, Georgia
  2. 2Google Labs, Tel-Aviv, Israel
  3. 3Boston Public Health Commission, Massachusetts
  1. Correspondence: Rishi Desai, Centers for Disease Control and Prevention, 1600 Clifton Rd. NE, MS-A34, Atlanta, GA 30333 (rdesai1{at}cdc.gov).

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.

  • Received April 25, 2012.
  • Accepted June 5, 2012.
CORRECTED PROOF

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