Bird Flu Alarm



Understanding Avian Influenza

What is the difference between a cold and the flu?

What is the difference between a cold and the flu?



The flu and the common cold are both respiratory illnesses, but they are caused by different viruses. Because they have similar symptoms, it can be difficult to tell them apart.

Influenza or "the flu" develops when a flu virus infects your respiratory system, including your nose, throat, bronchial tubes, and possibly the lungs. A cold virus infects usually infects only your upper respiratory tract: your nose and throat. Flu symptoms are generally worse than illness caused by the common cold. What we call "stomach flu" or "intestinal flu" is really another virus that causes vomiting and diarrhea. It's confusing terminology, because it really isn't the flu. It's just another type of viral infection.