1 янв 1799 г. - William Woodville and George Pearson

Описание:

Repeated Jenner's experiment but one of the patients died due to contaminated equipment.
They did not know what caused the death so blamed it on Jenner's method, making people trust Jenner less.
Published "Repeats of a Series of Inoculations for the Variola Vaccine or Cowpox"

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