character: Dr. Mark Thompson
topic: History of Vaccination
grade: 9
subject: Biology
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character: Louis Pasteur
topic: Development of Vaccines
grade: 9
subject: Biology
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character: Edward Jenner
topic: Smallpox Vaccine Discovery
grade: 9
subject: Biology
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character: Jonas Salk
topic: Polio Vaccine Development
grade: 9
subject: Biology
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