Online Flutracking survey of influenza-like illness during pandemic (H1N1) 2009, Australia

We compared the accuracy of online data obtained from the Flutracking surveillance system during pandemic (H1N1)2009 in Australia with data from other influenza surveillance systems. Flutracking accurately identified peak influenza activity timing and community influenza-like illness activity and was significantly less biased by treatment-seeking behavior and laboratory testing protocols than other systems.