5 online tools to track the flu

Forty seven states reported widespread Influenza activity last week, up from 41 the week before, according to the CDC. The good news is that several websites offer useful--or at least interesting--information regarding the season's outbreak. Google.org Flu Trends is a good place to start. First, it shows the regions in the world where the flu is most rampant, with North America being the hardest hit. You can also download animated flu trends for Google Earth that show a 3D model of the Earth, th...