The USDA’s head veterinarian stresses that it's impossible to predict how far a particular bird flu strain may travel or mutate.
Although this outbreak is so far relatively small, it is a concern because of last year’s devastating avian flu outbreak in the upper Midwest.
Another outbreak of bird flu in the Midwest remains likely, even if farms and public health systems are more prepared to deal with it.
After criticisms of their response to the spring outbreak, USDA officials say they have a plan for this fall that could handle twice as many infections.
A recently published study has found wild birds prefer non-organic when given the choice between conventional and organic bird food.