No wonder that the word "virus" triggers fear. The majority of the most dangerous and most difficult to treat diseases currently known to man are caused by viruses. Such diseases include: AIDS, all strains of Influenza, and all types of Hepatitis. But is this all we have to know about a virus? To answer this question, Astrid Fabry takes us into the world of micro-bodies, explaining the different types of viruses. He explains how they multiply and operate. Additionally, he offers other pieces of information, based on the principle that "you can defeat the enemy that you know"