Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) chronic granulomatous disease ?
    ### Response:
    Chronic granulomatous disease is a disorder that causes the immune system to malfunction, resulting in a form of immunodeficiency. Immunodeficiencies are conditions in which the immune system is not able to protect the body from foreign invaders such as bacteria and fungi.
    