| A | B |
|---|
| Communicable Disease | A disease that is spread from one living thing to another or through the enviorment |
| Toxin | A substance that kills cells or interferes with their functions |
| Viruses | A form of genetic material that invades living cells to reproduce |
| Pathogens | An organism that can cause disease |
| Vector | An organism, such as a tick, that carried and transmits pathogens to humans or other animals |
| Bacteria | single-celled microorganisms |
| Antibody | A protein that acts against a specific antigen |
| Immune system | A network of cells, tissue, organs, and chemicals that fights pathogens |
| Inflammatory Response | A reaction to tissue damage caused by an injury |
| Phagocyte | A white blood cell that attacks invading pathogens |
| Antigen | A substance that is capable of triggering an immune response |
| Immunity | The state of being protected against a particular disease |
| Lymphocyte | Specialized white blood celsl that provide the body with immunity |
| Vaccine | A preparation of dead or weakened pathogens that are introduced into the body to stimulate an immune response |
| Emerging Infection | A communicable disease whose incidence in human has increased within the past two decades or treatens to increase in the near future |
| Pneumonia | an inflammation of the lungs commonly caused by a bacterial or viral infection |
| Jaundice | A yellowing of the skin and eyes |
