Wisconsin's huge deer herd is infected with chronic wasting disease (CWD), a deadly dementia that is a mad cow-type disease in deer, filling their brains with swiss cheese-like holes and plaque. The best available scientific evidence indicates that CWD, like British mad cow disease, could infect and kill humans. Rather than learn from Britain's mistakes and take a precautionary approach, Wisconsin has launched a PR and advertising campaign to belittle human health concerns and promote hunting.