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of suffering and death.
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Infectious diseases today are the leading cause worldwide
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of death, and one of the jobs of our course
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is to give an explanation of why that's so.
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Furthermore, we've had a number of recent scares
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from new diseases like SARS, avian flu, swine flu.
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We're living in the midst of a global
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experience with the persistence of HIV/AIDS,
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tuberculosis, malaria--
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and these events remind us that epidemics
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are still major threats, even in the industrial world.
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Indeed, how we deal with them