African swine fever (AFS) is sweeping through China and is so virulent it has been dubbed a "pig Ebola". While the disease does not affect humans, it is devastating to pigs and potentially the world economy, as it is already having an impact on the global food chain. So why does New Zealand still import pork products from countries affected by African swine fever? The Country's Jamie Mackay spoke to former politician and current chairman of NZ Pork Eric Roy, who says banning imports is not as simple as it sounds.

Mackay: Eric these days you wear a different hat,