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Thursday, October 12, 2017

The first #smallpox vaccine changed the world—but we're still not sure what was in it

  1. The first smallpox vaccine changed the world—but we're still not sure what was in it  Popular Science
  2. New clues on the historical origin of the vaccine used to eradicate smallpox  EurekAlert
  3. Smallpox vaccine mystery persists  CosmosFull coverage

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