Infectious Disease Terms

3. An organism infected by a pathogen.
4. An increase in the occurrence of a particular disease above the baseline level of that population; tends to refer to larger, more serious events than the term outbreak.
6. A disease-causing organism.
8. An increase in the occurrence of a particular disease above the baseline level.
13. The immunity formed by stimulation of the immune system with an antigen and the generation of effector and memory cells; it is contrasted with passive immunity.
15. Refers to the idea that once a particular proportion of a population is immune to a disease, susceptible individuals are also better protected from the disease.
16. An injected solution of antigen or antibodies designed to cause an immune response.

1. An epidemic of infectious disease that has spread across a large region (multiple continents or worldwide).
2. A cell that is capable of phagocytosis; includes macrophages.
5. Characteristic of the second line of defence in response to infection or damage; results in swelling, pain, redness and heat.
7. A chemical released by mast cells and basophils that increases blood flow and the permeability of capillaries.
9. Naturally produced or synthetic compounds that are toxic to bacteria.
10. A complex network of cells, tissues and organs in the body that detect difference between self and foreign particles and mounts an immune response.
11. A Y-shaped protein produced by plasma cells that bind to a specific antigen; also called an immunoglobulin.
12. A large molecule, usually a protein, which generates an immune response.
14. A type of leukocyte involved in specific immune responses.