Australia,NZ and Uk supposedly have one of the world's strictest quarantine and customs regulations but a lot of the enforcement centres around profit protection. Australia for example claims to protect its agriculture from diseases and what have you. So does NZ. Yet these countries are not immune to the china dairy melamine food contamination. Last year, Australia also had the horse flu issue and some of their agricultural disease issues originated from their own grounds. If you compare food prices in NZ, Australia vs rest of the world, prices tend to be relatively dearer.