Multiple SARS-CoV-2 variants are circulating globally. Several new variants emerged in the fall of 2020, most notably:
• In the United Kingdom (UK), a new variant of SARS-CoV-2 (known as 20I/501Y.V1, VOC 202012/01, or B.1.1.7) emerged with a large number of mutations. This variant has since been detected in numerous countries around the world, including the United States (US). In January 2021, scientists from UK reported evidence[1] that suggests the B.1.1.7 variant may be associated with an increased risk of death compared with other variants. More studies are needed to confirm this finding. This variant was reported in the US at the end of December 2020.
• In South Africa, another variant of SARS-CoV-2 (known as 20H/501Y.V2 or B.1.351) emerged independently of B.1.1.7. This variant shares some mutations with B.1.1.7. Cases attributed to this variant have been detected in multiple countries outside of South Africa. This variant was reported in the US at the end of January 2021.
• In Brazil, a variant of SARS-CoV-2 (known as P.1) emerged that was first was identified in four travelers from Brazil, who were tested during routine screening at Haneda airport outside Tokyo, Japan. This variant has 17 unique mutations, including three in the receptor binding domain of the spike protein. This variant was detected in the US at the end of January 2021.
Content Notes:
Emerging Variants -- Why Strain Surveillance is Important for Public Health -- Strain Surveillance in the US.
National Center for Immunization and Respiratory Diseases (U.S.). Division of Viral Diseases.
Jan. 28, 2021 | Scientific brief
Description:
Updated Jan. 28, 2021The emerging variants CDC is closely monitoring have mutations in the virus genome that alter the characteristics and cause the v...
CDC | Updated: Jan 28 2021Total Number of COVID-19 Cases in the US Reported to the CDC, by State/TerritoryData Sources, References & Notes: Total case...
National Center for Immunization and Respiratory Diseases (U.S.). Division of Viral Diseases.
Jan. 28, 2021 | Scientific brief
Description:
Updated Jan. 28, 2021The emerging variants CDC is closely monitoring have mutations in the virus genome that alter the characteristics and cause the v...
National Center for Immunization and Respiratory Diseases (U.S.). Division of Viral Diseases.
Jan. 11, 2021 | Scientific brief
Description:
Updated Jan. 11, 2021B.1.1.7 Lineage Cases in the United States*† Total Cases: 72*The cases identified above are based on a sampling of SARS-CoV-2-p...
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