Biology 1001A Study Guide - Midterm Guide: Reverse Transcriptase, Virophage, Mamavirus

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22 Nov 2012

Document Summary

Pre lecture: the general mechanisms by which vaccines protect against diseases. They create a catch of weapons for your body"s immune system to use when needed. When a person gets a viral infection, it may take days or weeks for your body to fight back at full strength. When said person is pre-immunized there are forces in the body pre-trained to recognize and fight off certain viruses: why developing a vaccine against hiv is relatively challenging, compared to other diseases. Hides itself in your genome: why people are encouraged to get a flu vaccince each year (as opposed to one time only) They virus changes all the time and therefor one certain antibody cannot be used. A best guess is taken at what the most prevalent strain of virus will be and the vaccine is issued. Epidemic- a widespread occurrence of an infectious disease in a community at a particular time. Pandemic- when the infectious disease hits goes global.

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