1st US case of bird flu in a pig raises concerns over potential human threat
1st US case of bird flu in a pig raises concerns over potential human threat

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1st US case of bird flu in a pig raises concerns over potential human threat

1st US case of bird flu in a pig raises concerns over potential human threat
1st US case of bird flu in a pig raises concerns over potential human threat
It has already been in us humans, the pigs raised concerns then.