Bird flu cases are down, but the threat hasn’t passed. What to know about the H5N1 outbreak.
By most indications, the avian influenza outbreak that has washed over U.S. farms is at an ebb. Experts don’t seem hopeful, however, that the problem has taken care of itself. The waterbirds that carry the virus in the wild have only just begun their spring migration, and peak migration season in April and May will … Read more