By April the virus has spread to nearly 800 poultry farms and resulted in the culling of almost 11 million chickens.
By April the virus has spread to nearly 800 poultry farms and resulted in the culling of almost 11 million chickens.
到4月时病毒已经传播至将近800个家禽农场，结果几乎1100万只家禽感染。