character: Louis Pasteur
topic: The development of vaccines for rabies and anthrax
grade: 9
subject: Biology
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character: Edward Jenner
topic: The pioneer of vaccination using cowpox to prevent smallpox
grade: 9
subject: Biology
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character: Jonas Salk
topic: The development of the polio vaccine
grade: 9
subject: Biology
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character: Louis Pasteur
topic: Germ theory and its impact on public health
grade: 9
subject: Biology
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