A third U.S. farm worker infected with bird flu is the first to experience respiratory symptoms

A third human case of H5 bird flu tied to the ongoing U.S. outbreak in cattle has been detected in a farm worker in Michigan, state health authorities confirmed on Thursday.

The unnamed individual worked on a dairy farm and was in close contact with infected cows, the state health department said in a statement. The farm involved is different from the one where an earlier human case was detected last week.

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