Biology 1001A Lecture Notes - Lecture 2: Reverse Transcriptase, Antiviral Drug, Thymidine
Document Summary
Sunday, december 14, 2014. Independent study outcomes: the general mechanisms by which vaccines protect against diseases. Vaccines create weapons in immune system that are deployed when needed. Trains body to recognize and neutralize invader quickly and efficiently. Without vaccines the battle against disease would take too long - > too late. Vaccine speeds up process: why developing a vaccine against hiv is relatively challenging, compared to other diseases. Virus mutates/changes shape relatively quickly preventing antibodies from being able to recognize invaders. Each year the virus mutates making it unrecognizable to antibodies. Therefore antibodies must be replaced each year to recognize and neutralize invader. General global distribution of hiv infections. Reasons why hiv is more common in some parts of the world than others. Hiv occurs worldwide - > pandemic. South africa (sub- saharan) has the majority of hiv positive people. Lack of sexual education. Less money for aids prevention (condoms, disposable needles, drug treatment)
