anth200apr16

anth200apr16 - ANTH 200 April 16, 2008 Darwinian Medicine...

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ANTH 200 April 16, 2008 Darwinian Medicine Adaptive nature of diseae transmission: diseases should possess traits  that promothe THEIR survival and reproduction, and the body should  possess traits to counter it Eg.- rabies virus makes a dog hyper-aggressive, to increase odds of  transmission (=rs for virus) by bite Virulence=how bad it is, transmissibility=how easily its spread Ebola virus- wipes out villages An arms race, as in the Red Queen Antibiotics: why do we keep switching? In 1941, all bacterial infections were treatable with Penicillin; by 1944,  resistance was seen. Today, 95% strains show some resistance Methicillin in 1990’s- in one year in US, resistance went from 5%-80% Today in US, 50% mortality rate for people who contract multiple  resistant TB- who’s winning this arms race? First line of defense- prevent unwanted stuff from entering; why does  rotten food smell rotten Or… expel unwanted stuff once ingested; allergies as evolved smoke  detector, vomiting, diarrhea
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This note was uploaded on 09/03/2009 for the course ANTH 200 taught by Professor Stanford during the Fall '08 term at USC.

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anth200apr16 - ANTH 200 April 16, 2008 Darwinian Medicine...

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