character: Edward Jenner
topic: The Development of the First Vaccine
grade: 9
subject: Science
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character: Louis Pasteur
topic: Advancements in Vaccination and Germ Theory
grade: 9
subject: Science
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character: John Snow
topic: Early Contributions to Epidemiology and Public Health
grade: 9
subject: Science
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character: Ignaz Semmelweis
topic: The Importance of Hygiene in Medical Practices
grade: 9
subject: Science
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