This Fascinating Chart Shows Why Flu Season Could Be Especially Bad This Year

This flu season is already shaping up to be worse than the last. Because flu season occurs in different time periods around the world, health experts track outbreaks of the virus globally to try and predict how the illness will affect each country before anyone there actually gets sick.  Predicting how bad a particular flu season will be is a tough call. But in many years, flu outbreaks in the southern hemisphere can help foretell the virus' severity in the US. A group of scientists organized ...