Called Google Flu Trends, Google's philanthropic arm is testing the tool, which developers say may be able to detect regional outbreaks of the flu a week to 10 days before they are reported by the U.S. Centers for Disease Control and Prevention, The Times reported.
"It turns out that traditional flu surveillance systems take 1-2 weeks to collect and release surveillance data, but Google search queries can be automatically counted very quickly," Google said on its official blog, the Agence France-Presse reported Wednesday. For now, the service will track only flu cases in the United States, but Google is hoping to eventually use the technique to track the flu worldwide, The Times reported.
Google, Inc.'s (NYSE: GOOG) shares fell $15.97 to $295.49 Wednesday afternoon amid a broader market sell-off.



