character: Dr. Mark Johnson
topic: Impact of Vaccines on Infectious Disease Outbreaks
grade: 10
subject: Science
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character: Dr. Sarah Thompson
topic: Vaccination Strategies and Public Health
grade: 10
subject: Science
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character: Dr. Emily Carter
topic: Historical Trends in Vaccine Development
grade: 10
subject: Science
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character: Dr. David Lee
topic: Effects of Herd Immunity on Disease Spread
grade: 10
subject: Science
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