| A | B |
|---|
| disease | unhealthy condition of the body or mind |
| communicable disease | a disease that spreads from person to person |
| noncommunicable disease | a disease that doesn't spread from person to person |
| infection | when germs invade body, multiply, and cause harm to body cells |
| viruses | smallest and simplest, colds, rabies, AIDS |
| Bacteria | one celled organism, strep, tuberculosis, lyme disease |
| fungi | primitive plant(s), mold, athlete's foot, jock itch, vaginitis |
| protozoa | one celled organism similar to animals, malaria |
| direct contact | passed by touching infected area to another person |
| indirect contact | sneezes, coughs, shared cups, utensils |
| contact with animals | bite of an infected insect or animal |
| other contacts | contaminated food or water |
| immune system | group of cells, tissues, and organs that fight specific germs |
| lymphocytes | white blood cells that attack germs |
