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After the First Few, Why No Flood of Vaccines?

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After the First Few, Why No Flood of Vaccines?

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After the First Few, Why No Flood of Vaccines?

After the First Few, Why No Flood of Vaccines?

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Commentator Ruth Levy Guyer reflects on the discovery of the first vaccine by Edward Jenner in 1803 and the surprisingly small number that have been developed since then.