Immune System
Your body’s immune system is a very complicated network of organs and cells that work together to fight deadly intruders called antigens, which are any organism that could make you sick, like bacteria, microbes, parasites and viruses.
An antigen, such as a virus, is a virus, is a parasite.
A parasite cannot survive by itself – if needs to feed off of an animal, human, or plant (also called the host) to survive.
Once inside the cells of a host, a virus tries to become active and multiply. If it successful it can eventually create so many copies of itself that it causes the cell to burst releasing the virus into the body.
Then the virus finds more cells on your body in which to live. This process can continue on and on, until the virus has attacked enough cells to make you ill.
However, a healthy and strong immune system can usually kill any viruses before they multiply to such a damaging degree.
Immune System
