&glossary= C Contaminate. Infect Contrast. To become affected with (an infection or disease, for example). Complications. other disease or conditions that develop in the course of a previous disease or condition. &d=D Debiliate. Weaken Deficiency. Lack of some necessary quality or element. H Hypodermic. Introduced or injected beneath the skin. I Immunity. A system by which organisms resist or overcome infection and disease. Immunodeficiency. Inability to produce the normal amount of antibodies (substances that counteract the effects of poisonous or harmful materials in the body). Internal hemorrhage. Heavy and uncontrollable bleeding inside the body. &m=P Paraphernalia. Equipment; accessories. Prevalence. The widespread incidence; the quality of being widespread or of prevailing generally. S Syndrome. A group of signs and symptoms that occur together and often indicated the presence of disease. T Transfusion. The transfer (of blood, for instance) from one person or animal to another. Transmit. To send or carry from one person or place to another. V Virus. Any numerous kinds of very small and simple organisms existing only in living cells and able to cause diseases.