| A | B |
|---|
| disease | a condition that interferes with the proper functioning of the body or mind |
| communicable disease | disease passed from person to person |
| noncommunicable disease | disease that cannot be spread from one person to another |
| germ | the microorganisms that cause disease |
| infection | when germs get inside the body, multiply, & damage body cells |
| virus | causes a range of diseases that can be prevented with vaccination |
| bacteria | causes diseases, such as strep throat, that can be treated with antibiotics |
| fungi | causes diseases, such as athlete's foot & ringworm |
| protozoa | causes disease, such as malaria |
| immune system | combination of body defenses that fight off germs & disease |
| lymphatic system | a secondary circulatory system that fights germs & maintains fluid balance |
| lymphocytes | special white blood cells in the lymph |
| antigens | substances that send your immune system into action when it's invaded |
| antibodies | proteins that attach to antigens, keeping them from harming the body |
| immunity | your body's ability to resist the germs that cause a particular disease |
| vaccine | injection of dead or weakened germs so the body can produce antibodies |
| influenza | communicable disease characterized by chills, fatigue, headache, etc. |
| mononucleosis | disease that is most common in teens; "the kissing disease" |
| hepatitis | disease characterized by yellowing of the skin & the whites of the eyes |
| tuberculosis | bacteria-caused disease that affects the lungs |
| contagious period | length of time when a particular disease can spread from person to person |
| STD | sexually transmitted disease |
| chylamydia | STD that may affect the reproductive organs, urethra, & anus |
| gonorrhea | STD that affects the genital mucous membrane & other body parts |
| genital herpes | STD that produces blisters in the genital areas |
| syphilis | STD that can affect many body parts; very dangerous disease |
| AIDS | acquired immunodeficiency syndrome |
| HIV | human immunodeficiency virus; cause AIDS |
| prevention | keep from happening |
