What we know about H5N1 bird flu in cows — and the risk to humans
The discovery of H5N1 bird flu in U.S. cattle — and the news that at least one person in Texas has been infected, apparently through contact with infected cows — has taken scientists who study influenza by surprise.
But after absorbing their shock, several admitted there was evidence to suggest bovine infection could happen — it just hadn’t been reported with this particular strain of influenza virus until now.
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