一种新的病毒在野生鸟类中广泛传播，但以前从未在奶牛中发现过。
Original article: https://www.nytimes.com/2025/02/05/health/bird-flu-cattle-d11.html
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一种新的病毒在野生鸟类中广泛传播，但以前从未在奶牛中发现过。
Original article: https://www.nytimes.com/2025/02/05/health/bird-flu-cattle-d11.html