You've probably seen bird flu popping up in headlines more often lately—but do you know what the disease looks like in humans? Here's what to know about the symptoms of bird flu, including one unusual sign that has emerged in many of the 55 human cases recorded in the U.S. so far.
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If you were forwarded this and want to sign up to receive it daily, click here. Today's newsletter was written by Jamie Ducharme and edited by Mandy Oaklander.