Countries that vaccinate their animals against foot-and-mouth disease are "unclean." Since they are vaccinated, they must also have the disease, is the logic. This means that they cannot export to "pure" markets. In 1990, the EU decided that they would belong to the "pure" countries. The way they did it was to ban all vaccination of animals. And the result? The export of meat went straight to heaven, and so did the profits.