What sort of disease is chronic granulomatous disease (c.g.d.)?

Immunodeficiency: The body's immune system is made of 3 kinds of cells: t-cells, b-cells and WBC (white blood cell). Wbcs roam the various tissues and engulf bacteria and fungi they encounter and then digest them inside themselves. When a crucial molecule, the reactive oxygen species (ros) is not present to enable the killing, the infection is not stopped. So these patients get sick very often.