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How effective are vaccines against omicron? An epidemiologist answers 6 questions

  • Written by Melissa Hawkins, Professor of Public Health, American University
How effective are vaccines against omicron? An epidemiologist answers 6 questionsUnderstanding how much protection a vaccine offers is not as simple as it sounds.Andriy Onufriyenko/Moment via Getty Images

The pandemic has brought many tricky terms and ideas from epidemiology into everyone’s lives. Two particularly complicated concepts are vaccine efficacy and effectiveness. These are not the same thing. And as time goes...

Read more: How effective are vaccines against omicron? An epidemiologist answers 6 questions

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