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The Conversation
The Conversation
Sara Sawyer, Professor of Molecular, Cellular and Developmental Biology, University of Colorado Boulder

Alpha then delta and now omicron – 6 questions answered as COVID-19 cases once again surge across the globe

University of Colorado Boulder
The list of SARS-CoV-2 variants – each with its own unique qualities that give it an edge – just keeps growing. Matt Anderson Photography/Moment via Getty Images

Editor’s note: The omicron variant of SARS-CoV-2, the virus that causes COVID-19, has fueled a rapid surge in cases globally. We asked a team of virologists and immunologists from the University of Colorado Boulder to weigh in on some of the pressing questions that people are asking about the new variant.

How is omicron different from previous variants?

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