A sad reality that we have to face when studying outbreak science is that sometimes groups of people use outbreaks intentionally to inflict harm on another group. We call this "weaponizing an outbreak", and it's the focus of this episode of Crash Course Outbreak Science. In this episode we'll look at how different groups have weaponized outbreaks throughout history, and the consequences, and we'll discuss what we can learn from those cases to prevent bioweapon attacks in the future.