W1 - Epidemiology Key Terms

1. defined as the habitual presence of a disease within a given geographic area
4. is defined as the occurrence in a community or region of a group of illnesses of similar nature, clearly in excess of normal expectancy and derived from a common or a propagated source
7. is the study of how diseases or health characteristics are distributed in populations and the factors that influence or determine this distribution.
9. refers to a worldwide epidemic
10. prevention that denotes preventing complications in those who have already developed signs and symptoms of an illness and have been diagnosed (i.e., people who are in the clinical phase of their illness)
11. period is defined as the interval from receipt of infection to the time of onset of clinical illness (the onset of recognizable symptoms

2. transmission that can occur through a common vehicle such as a contaminated air or water supply or by a vector such as the mosquito
3. prevention that involves identifying people in whom a disease process has already begun, but who have not yet developed clinical signs and symptoms of the illness.
5. prevention that denotes an action taken to prevent the development of a disease in a person who is well and does not (yet) have the disease in question
6. is defined as the resistance of a group of people to an attack by a disease to which a large proportion of the members of the group are immune
8. transmission where a disease can be transmitted from person to person