SARS-CoV-2 variants of concern and variants of interest, updated 31 May 2021



Variants of Concern (VOC): SARS-CoV-2 variant that meets the definition of a VOI and, through a comparative assessment, has been shown to be associated with one or more of the following changes in degree of importance to global public health: 

  • Increased transmissibility or detrimental change in the epidemiology of COVID-19; or
  • Increased virulence or change in the clinical presentation of the disease; or
  • Decreased effectiveness of social and public health measures, or of available diagnostics, vaccines, and therapies.

Below is a summary of VOC data identified to date:

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