human
I've heard that there is a bird flu. What is the difference between a bird flu and the flu that affects humans?
assistant
The main difference between a bird flu and the flu that affects humans is that a bird flu is caused by a virus that is specific to birds, while the flu that affects humans can be caused by a variety of different viruses. A bird flu can cause severe illness in poultry and other birds, but it is not usually fatal for them. However, a human influenza can cause serious illness or death in humans.