character: Dr. Robert Chen
topic: The History and Development of Vaccines
grade: 10
subject: Science
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character: Louis Pasteur
topic: The Germ Theory and Vaccination
grade: 10
subject: Science
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character: Edward Jenner
topic: The First Vaccine and Smallpox
grade: 10
subject: Science
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character: Jonas Salk
topic: The Polio Vaccine Breakthrough
grade: 10
subject: Science
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