Immunity to seasonal flu protects against severe illness from bird flu in ferrets, research reveals

The fatality rate for H5N1 highly pathogenic avian influenza in humans has historically been high, with more than half of people dying. Why, then, is the current H5N1 bird flu outbreak—which has caused massive die-offs in wild birds, farmed poultry and even wild mammals—causing mostly mild symptoms in the people it has infected?

This article was originally published on MedicalXpress.com

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