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Temporal Relationship Between Healthcare-Associated and Nonhealthcare-Associated Norovirus Outbreaks and Google Trends Data in the United States

  • Hanako Osuka (a1), Aron J. Hall (a1) (a2), Mary E. Wikswo (a2), Julia M. Baker (a1) and Benjamin A. Lopman (a1) (a2)...


Healthcare-associated norovirus outbreaks increase later but have a more pronounced seasonality than nonhealthcare norovirus outbreaks. Healthcare-associated norovirus outbreaks had higher correlation with Google Trends activity than nonhealthcare outbreaks (R2=0.68 vs 0.39). Google Trends data may have the potential to supplement existing norovirus surveillance due to its real-time availability.

Infect Control Hosp Epidemiol 2018;39:355–358


Corresponding author

Address correspondence to Benjamin A. Lopman, PhD, Department of Epidemiology, Rollins School of Public Health, Emory University, 1518 Clifton Rd NE, CNR Room 4013, Atlanta, GA 30322 (


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