Safety and Efficacy of Covid 19 Vaccine

Please read the attached paper which examined the safety and efficacy of a COVID-19 vaccine.
Answer the following questions.
1. What conclusions did the authors make?
2. What is the sample based on which the conclusions were drawn? Can you briefly describe its characteristics (sample size, sex, race, country, age, and others)?
3. What is the population this specific sample can represent? Does it only represent the US population? Does it only represent the white population?
4. Can we apply the conclusions to a 12-year-old boy who is raised in the US?
5. Can we apply the conclusions to an 80-year-old lady who lives in Argentina?
6. Can we apply the conclusions to a 50-year-old man who lives in Japan?
7. Do you see any limitations of the study that may bias the conclusions?
Please prepare no more than 5 slides that summarize your findings for the above questions. Record a presentation video (2-5 minutes long)

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