Bird flu discovered in Dutch farm

（单词翻译）

　　THE HAGUE, June 24 (Xinhua) -- Bird flu was discovered at a poultry¹ farm in the central Dutch province of Flevoland, the Ministry² of Agriculture said Friday.
It said the virus discovered was a mild variant³. The farm's 47,000 chickens were slaughtered⁴ to prevent the virus turning into a contagious⁵ and deadly variant.
It remains⁶ uncertain whether the chickens were infected with the high or low pathologene H7 variant. The low pathologene version can mutate into a high pathologen, which is extremely transmittable.
Poultry from other farms in a zone of three kilometres of the contaminated farm will be tested. A prohibition⁷ of transport for poultry, eggs and poultry manure⁸ has been set.（本文由在线英语听力室整理编辑）