H5N1 bird flu is spreading through cows, poultry, and wild birds, causing sporadic illnesses in people across the United States. One virologist weighs in on who’s most at risk and what precautions should be taken to avoid exposure.

How serious is bird flu? A virologist weighs in

H5N1 bird flu is spreading through cows, poultry, and wild birds, causing sporadic illnesses in people across the United States. One virologist weighs in on who’s most at risk and what precautions should be taken to avoid exposure.