What is Immunology?
Immunology is the branch of biomedicine dealing with the structure and function of the immune system.
Source: http://www.answers.com/topic/immunology

The immune system includes all structures and processes that provide a defense against potential pathogens. These defenses can be grouped into two different categories. Innate immunity and Adaptive immunity are the two different categories. Innate defense mechanisms are inherited as part of the structure of each organism. The genes required for this type of immunity are inherited. It includes both external and internal defenses. They are always present in the body and represent the first line of defense against pathogens. Adaptive Immunity is the immunity when you get injected with a certain pathogen so you can fight the disease or pathogen.

How does Immunology apply to Occupational Therapy?
If we have a patient with an immune disorder, such as AIDS, we would most likely address Medication Management, Social Participation and Emotional Regulation. We would stress the importance of taking their medication on time EVERYDAY! We would make sure they understand that if they dont take their medication on time they could get very sick and possibly end up in the hospital. We would also discuss Social Participation with this individual. We would encourage them to live their life to the fullest while still paying attention to their disease and what their body is telling them. We would also encourage the patient to attend group meetings and activities to discuss their feelings and meet others who are going through the same thing.