We have all heard of the word “germ”. But what is a germ? Actually, "germ" is a generic term that refers to micro-organisms that cause diseases. Some examples are viruses, bacteria, fungi, and protozoa.
Viruses are the culprits behind the common cold, influenza, and many ears, nose, and throat infections. In fact, there are approximately 200 viruses that cause influenza (flu) and influenza-like illnesses (ILI).