Table 2 Pearson correlations between national supervised Twitter and Google models and Data Mart laboratory confirmed cases by influenza type during the 2015/16 influenza season.

From: The added value of online user-generated content in traditional methods for influenza surveillance

 

Influenza Type A

Influenza Type B

All Data Mart laboratory confirmed cases

England Twitter

0.83

0.24

0.74

England Google

0.82

0.68

0.95

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