2005年以来,正在全球蔓延的具有新型病 毒的禽流感越来越引起人们的注意。新型病毒变 种名为H5N1亚型,它正是导致新一轮世界性禽 流感流行的罪魁祸首。虽然卫生专家从2003年 开始就警告说禽流感是当今人类社会面临的最严 重的健康威胁之一,但是直到最近数月来,世界 各国才开始意识到禽流感威胁的不仅仅是禽类。 Since 2005, bird flu with a new type of virus that is spreading around the world has drawn increasing attention. The new variant is H5N1 subtype, and it is precisely the culprit that led to a new round of world-wide avian flu epidemic. Although health professionals have warned from the beginning of 2003 that bird flu is one of the most serious health threats facing humanity today, it was not until in recent months that the world began to realize that the bird flu threatened more than just poultry.