For more on Global COVID-19 activitiesSequencing is a laboratory technique that is used to read the genetic code and identify variants of SARS-CoV-2.
CDC is working with more than 20 countries in the Americas, Africa, Asia and Eastern Europe to establish or expand sequencing capacity so that more samples of SARS-CoV-2, including variants, can be identified, characterized, and reported.CDC supports the global COVID-19 response through collaborations with the World Health Organization (WHO), Ministries of Health, academic and research institutions, and other organizations in order to track the rapidly evolving situation of variants.