And it is so contagious --it can be carried in dust particles clinging to a car antenna--that one infected animal can easily contaminate the entire herd.

• 口蹄疫传播性极大，例如它会在灰尘粒子中粘到汽车的天线上。 如此感染了一头动物，就能轻易地传播到整个牛群。