Resh1 - Biology 1B Ecology Lecture 1 Page 1 Professor Resh...

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Professor Resh Spring 2010 The Control of River Blindness in West Africa: an example of what we will discuss in ecology and evolutionary biology during the last part of the semester Outline of Lecture 1 Ecology of a Human Disease A. What is Onchocerciasis? B. What causes it? C. How is it controlled? D. What happened after Onchocerciasis was controlled? E. Geopolitics and disease control programs F. Skin pigmentation and human evolution A. What is Onchocerciasis? Onchocerciasis—or river blindness—is a human disease that may results in 10-30% of villagers in West Africa becoming blind. It is known from Africa and parts of South America, but 99% of the blindness from it occurs in West Africa. Early stages include rashes, severe itching. Blindness results from immune response. B. What causes it? 1. It is transmitted by the black fly Simulium damnosum 2. It is caused by the filarial worm Onchocerca volvulus C. How is it controlled? 1.
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This note was uploaded on 03/08/2011 for the course BIO 1B taught by Professor Carlson,mischel,power during the Spring '07 term at Berkeley.

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Resh1 - Biology 1B Ecology Lecture 1 Page 1 Professor Resh...

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