Google has found that certain search terms are good indicators of flu activity. Google Flu Trends is now using aggregated Google search data to estimate flu activity in your state up to two weeks faster than traditional systems (e.g. the Centers for Disease Control, CDC).
You can look at how your state is doing. Most states have had low flu incidence so far this year, but a few, which are mostly in the mid-Atlantic to southeast are already to the moderate activity stage.
http://www.google.org/flutrends/It's a good reminder to get a flu shot if you haven't already.