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Basic Infectious
| Question | Answer |
|---|---|
| Patnogencity | ability of a parasite to gain entry in to the hosts tissue |
| Endemic | Disease that occurs at a low level in a certain geographic area |
| Pathogenicity Islands | cluster of genes resposible for virvulence |
| Pandemic | Disease occurs worldwide |
| Direct method | Physical contact with infected person |
| Indirect method | consumption of contaminated food & water |
| Epidemic | Disease breaks out in explosive proportions within a population |
| Virulence | Concept used to express the degree of pathogencity of a parasite |
| Disease | Any change from the general state of good health |
| Infection | Invasion of colonization of the body by a pathogenic microbe. relationship bewteen 2 organisms & the competition takes place between them |
| Parasite | Another term for pathogen |
| Portal of entry | to the site at which microbes enter the host |
| Normal Microflora | population of microbes that infect the body without causing disease |
| Rservoir | safe place for parasite to reproduce |
| Carrier | one type of reservior |
| Fomites | Inanimate objects that carry disease organisms |
| Exotoxins | Protein molecules produced mainly by gram postive bacteria |
| Dose | number of parasites that must be taken into the body for disease to be estabilished |
| Endotoxins | part of the cell wall of gram negative bacteria & relased when cell is destroyed |
| Invasiveness | ability of a parasite to penetrate tissues & causes structual damage |