Ebola continues to spread to different parts of Africa as the world looks on. Every year there seems to be a new disease or health crisis to worry about. But, people forget that there are many diseases out there that may not by as widespread as this recent outbreak, but are no less deadly. (Not to mention, the flu alone kills many people every year.) Thankfully, due to medical advances, the United States doesn't have to worry about most of the diseases. The rest of the world does, though. Here are some of the most horrible diseases we are still...