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SARS-CoV-2 variant classifications and definitions
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Sept. 1, 2023
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Description:Updated Sept. 1, 2023
What You Need to Know
• Viruses like SARS-CoV-2 continuously evolve as changes in the genetic code (caused by genetic mutations or viral recombination) occur during replication of the genome.
• SARS-CoV-2 has consistently mutated over the course of the pandemic, resulting in variants that are different from the original SARS-CoV-2 virus.
• Throughout the COVID-19 pandemic, many variants of SARS-CoV-2 have been found in the United States and globally.
• Scientists use multiple classification systems to describe and communicate similarities and differences between SARS-CoV-2 viruses.
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Content Notes:Key Definitions -- Types of Classification -- Recombinants -- Summary of Variant Classifications -- List of Variants -- References.
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