专家指出,一头罹患口蹄疫的病猪,足以让7000头偶蹄牲畜感染上同样的病毒。口蹄疫能够在地面和水面上自然扩散达几十甚至100多公里,也可以通过空气和各种直接或间接接触而感染。英国的口蹄疫疫情一直未得到控制,截至3月22日,感染口蹄疫牲畜已达395例。为了消灭口蹄疫,英国从3月16日开始大规模宰杀和焚毁牲畜,宰杀的对象是病害高感染区方圆3公里以内的所 Experts point out that a foot-and-mouth disease pigs enough to make 7000 cloven hoofed animals infected with the same virus. Foot-and-mouth disease can naturally spread tens or even over 100 kilometers on the ground and on water, and it can also be infected by air and various direct or indirect contacts. The outbreak of foot-and-mouth disease in the United Kingdom has remained unmanaged. As of March 22, there have been 395 cases of foot-and-mouth disease. In order to eradicate foot-and-mouth disease, the United Kingdom slaughtered and burned livestock on a massive scale starting March 16, targeting slaughter areas within a radius of 3 km