The USDA is downplaying the new risk, bat it banned the importation of pork products from Britain as soon as it heard of the outbreak. And independent scientists are far less sanguine.

• 虽然美国疾病管理机构对于新的危机轻描淡写，但一听到这种流行病的爆发，还是立刻禁止从英国进口猪肉产品，那些不受政府控制的科学家认为事情远没那么乐观。