The worst-ever outbreak of bird flu has led to the disease becoming endemic in some birds, inflicted huge costs on the poultry industry, spread into wild and captive mammals and, in some rare instances, infected humans.
有史以來最嚴重的一次禽流感在一些鳥類中流行,給家禽業造成巨大損失,並蔓延到野生和圈養哺乳動物,在一些罕見的情況下,還感染了人類。
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