Chronic wasting disease (CWD)

©  Reuters / Henry Nicholls An incurable, mad-cow-like brain infection nicknamed “zombie deer disease” that causes deer, elk and moose to behave strangely and aggressively has spread through half the US – and some fear it may soon turn up in humans. Chronic wasting disease (CWD) renders its victims uncoordinated, confused and aggressive, while also causing…