Science & technology | Avian flu

A second human case of bird flu in America is raising alarm

How close is the H5N1 outbreak to becoming the next pandemic?

Dairy cows walk back to the barn after milking at a farm.
Photograph: Getty Images

Editor’s note (May 31st 2024): Since this piece was published a third farm worker has been identified with H5N1

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This article appeared in the Science & technology section of the print edition under the headline “Is an H5N1 pandemic brewing?”

From the June 1st 2024 edition

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