character: Dr. Sara Thompson
topic: Herd Immunity and Its Importance in Public Health
grade: 11
subject: Science
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character: Dr. Emily Carter
topic: Vaccination Strategies and Their Role in Achieving Herd Immunity
grade: 11
subject: Science
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character: Professor James Lee
topic: Historical Perspectives on Herd Immunity and Disease Control
grade: 11
subject: Science
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character: Dr. Maria Gonzalez
topic: The Science Behind Vaccines and Herd Immunity
grade: 11
subject: Science
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