character: Public Health Officials
topic: Effects of Vaccination on COVID-19 Spread
grade: 9
subject: Science
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character: CDC Guidelines
topic: Vaccination Strategies Against COVID-19
grade: 9
subject: Science
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character: WHO Recommendations
topic: Impact of Vaccination on Disease Transmission
grade: 9
subject: Science
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character: Epidemiologists
topic: Modeling COVID-19 Spread with Vaccination Rates
grade: 9
subject: Science
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