It is an organic chemical compound - a long chain molecule that acts like a computer program. Our DNA can be disrupted by viruses. Viruses are little bits of genetic information that enter the body and fit into the DNA program. They cause most of the 'flu' epidemics every winter. HIV can change and attack the body's defence systems and weaken the body so it is unable to resist other illnesses.
Computers get viruses too.
Little bits of information put into particular programs can empty files and shut down whole computer systems. These are little bits of information that have become part of our thought processes. They are always accepted unexamined. Perhaps they were implanted by well-meaning people when we were too young to examine them. For many people these viruses of the mind create a living hell.