Reassessing Google Flu Trends Data for Detection of Seasonal and Pandemic Influenza: A Comparative Epidemiological Study at Three Geographic Scales
Table 2
Comparison of seasonal and epidemic week of onset and peak weeks as measured by Google Flu Trends (GFT) and public health influenza-like illness (ILI) surveillance data at the national (United States), regional (Mid-Atlantic) and local (New York City) levels.