Cold versus flu

Want to know the difference between a cold and the flu? Now that cold and flue season is upon us ...

There is a chart in the Investigating Influenza and Bird Flu title that lists 11 different traits and whether that trait is found in a cold, the flu, or both. An interesting fact: "every year, between 4 and 20 percent of the world population catches some form of influenza."

Part of the Investigating Diseases series, there are five other topics in this series:  depression and bipolar disorder, diabetes, eating disorders, STDs, and tuberculosis.