These labels were chosen after wide consultation and a review of many potential naming systems. WHO convened an expert group of partners from around the world to do so, including experts who are part of existing naming systems, nomenclature, and virus taxonomic experts, researchers, and national authorities.

WHO will assign labels for those variants that are designated as Variants of Interest or Variants of Concern by WHO. These will be posted on the WHO website.

These labels do not replace existing scientific names (e.g. those assigned by GISAID, Nextstrain, and Pango), which convey important scientific information and will continue to be used in research.

While they have their advantages, these scientific names can be difficult to say and recall and are prone to misreporting. As a result, people often resort to calling variants by the places where they are detected, which is stigmatizing and discriminatory. To avoid this and to simplify public communications, WHO encourages national authorities, media outlets, and others to adopt these new labels.