Google Flu Trends Spatial Variability Validated Against Emergency Department Influenza-Related Visits

Joseph Jeffrey Klembczyk   ¹ , MPH, MD ;   Mehdi Jalalpour   ² , PhD ;   Scott Levin   ³ , PhD ;   Raynard E Washington   ⁴ , PhD ;   Jesse M Pines   ⁵ , MD, MBA, MSCE ;   Richard E Rothman   ³ , MD, PhD ;   Andrea Freyer Dugas   ³ , MD, PhD

¹ Johns Hopkins University, School of Medicine, Hampstead, NC, United States

² Cleveland State University, Department of Civil and Environmental Engineering, Cleveland, OH, United States

³ Johns Hopkins University, Department of Emergency Medicine, Baltimore, MD, United States

⁴ Agency for Healthcare Research and Quality, Rockville, MD, United States

⁵ Departments of Emergency Medicine and Health Policy, George Washington University, Washington, DC, United States