Rabies, One of the Deadliest Viruses

If not THE most dangerous. Until 2004, rabies had a 100% mortality rate. 2004! That was nine years ago. Hundreds of thousands of people have died over the centuries. 
Although, this doesn't mean it's cured. Since 2004, only 12 people ( have survived rabies under a set of procedures called the Milwaukee Protocol

In August, RadioLab did a podcast about rabies and the Milwaukee Protocol. Go ahead an listen to it. Rabies is an incredible cruel disease. Not only does it attack your nervous system, but it causes those whom are struck under it's horrible spell to be virtually unable to drink water because any contact with it will cause you severe pain. Because of this, it's also known as Hydrophobia.

There are lots of videos online showing of the effects of the disease. It's a horrible sight.