Norovirus Disease Surveillance Using Google Internet Query Share Data
Clinical Infectious Diseases(2012)
Rishi Desai, Aron J. Hall, Benjamin A. Lopman, Yair Shimshoni, Marcus Rennick, Niv
Efron, Yossi Matias, Manish M.
Patel, Umesh D. Parashar
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.