How does the immune system response to the disease?
It sends antibodies to attack the intrusion. (disease)
What is the name for the immune system response to an infection by a pathogen against which individual has been vaccinated?
There are many different diseases which result from problems with the immune system; broadly speaking, there are two types, which involve either an excessive immune response, causing an autoimmune disease such as multiple sclerosis, or an insufficient immune response, causing a disease such as AIDS. There are also many different reasons why the immune system may not work correctly. However, the greatest single threat to the functioning of the immune system is the human immunodeficiency…
Rheumatic Arthritis is an auto-immune disease. These diseases are caused when the immune system of the body triggers an immune response against its own cells and tissues, thereby degrading and harming the body. In other words, the immune system fails to identify the body constituents as 'self', and rather identifies them as 'foreign'; triggering an immune response against them and attacking them. Other examples are - Lupus, Crohn's disease, Grave's disease, etc.