mentioning the kuru
horizontal and vertical extent

case study
TSE
rasminss spongeform encaphelopathie
infection sickness

mad cow deasease is a kind of TSe
BSE -> food, cattle carcasses
preventing

BSE agent become more virulent as it crossed species barriers
+ mathemin homozygots wild game feasting
hepatitis -> anonymous sex

college campuses: high mobility


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