As google clearly knows everything you type into it’s search engine, it is able to figure out if you type flu-like symptoms during flu season months and using Google Flu Trends. Google Flu Trends is an excellent usage of extensive data generated by users when they search.
Google Flu Trends claims that CDC takes about two weeks to collect data from doctors and patients. Apparently, Google can easily count and track the frequency of the keywords people type in. They based the system on data they have collected since 2003. Google pledges to keep your privacy in mind as well, but they’re pretty good about that.
The data they show on the site is pretty fancy too, in Google-analyticsÃ‚Â style charts appear there. The first chart as this of this post is a recent flu activity chart, which also has past years data in background but just dimmed. You can already start to see the rise. You can also further refine the first chart to a particular state. The second fancy chart is of the United States. When hovering over a state, it’ll give you a Minimal, Low, Moderate and so on, estimate, based on flu activity from those states. Minnesota seems to be in the moderate range right now, which is great.
Google also has an entire health system, but I haven’t heard much of it lately.