Covid Variants List: There are many variants of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) the virus that causes coronavirus disease 2019 (COVID-19). Some are believed or have been stated to be of particular importance due to their potential for increased transmissibility, increased virulence, or reduced effectiveness of vaccines against them.
Five SARS-Co-2 variants have been designated as variants of concern by the World Health Organization: The Alpha, Beta, Gamma, Delta and Omicron variants. The emergence of SARS-CoV-2 may have resulted from recombination events between a bat SARS like coronavirus and a pangolin coronavirus through cross species transmission. Covid Variants List is given below.
Covid Variants List
Covid Variants List is given below.
|WHO labe||Pango lineage||GISAID clade||Nextstrain clade||Additional amino acid changes monitored||Earliest documented samples||Date of designation|
|Beta||B.1.351||GH/501Y.V2||20H (V2)||+S:L18F||South Africa,|
|Delta||B.1.617.2||G/478K.V1||21A, 21I, 21J||+S:417N
|+S:R346K||Multiple countries, Nov-2021||VUM: 24-Nov-2021|
- Genetic lineages of SARS-CoV-2 have been emerging and circulating around the world since the beginning of the COVID-19 pandemic.
- SARS-CoV-2 genetic lineages in the United States are routinely monitored through epidemiological investigations, virus genetic sequence-based surveillance, and laboratory studies.
- On November 30, 2021, the U.S. government SARS-CoV-2 Interagency Group (SIG) classified Omicron as a Variant of Concern (VOC). This classification was based on the following:
- Detection of cases attributed to Omicron in multiple countries, including among those without travel history.
- Transmission and replacement of the Delta variant in South Africa.
- The number and locations of substitutions in the spike protein.
- Available data for other variants with fewer substitutions in the spike protein that indicate a reduction in neutralization by sera from vaccinated or convalescent individuals.
- Available data for other variants with fewer substitutions in the spike protein that indicate reduced susceptibility to certain monoclonal antibody treatments.
- The SIG Variant classification scheme defines four classes of SARS-CoV-2 variants:
- Variant Being Monitored (VBM)
- Alpha (B.1.1.7 and Q lineages)
- Beta (B.1.351 and descendent lineages)
- Gamma (P.1 and descendent lineages)
- Epsilon (B.1.427 and B.1.429)
- Eta (B.1.525)
- Iota (B.1.526)
- Kappa (B.1.617.1)
- Mu (B.1.621, B.1.621.1)
- Zeta (P.2)
- Variant of Interest (VOI)
- Variant of Concern (VOC)
- Delta (B.1.617.2 and AY lineages)
- Omicron (B.1.1.529 and BA lineages)
- Variant of High Consequence (VOHC)
- Variant Being Monitored (VBM)
- To date, no variants of high consequence have been identified in the United States.
- Vaccines approved and authorized for use in the United States are effective against the predominant variant circulating in the United States and effective therapeutics are available. CDC continues to monitor all variants circulating within the United States.
- Variants being monitored (VBM)– View current VBM in the United States that continue to be monitored and characterized by federal agencies
- Variant of interest (VOI)– Currently, no SARS-CoV-2 variants are designated as VOI
- Variant of Concern (VOC)– View current VOC in the United States that are being closely monitored and characterized by federal agencies
- Variant of high consequence (VOHC)– Currently, no SARS-CoV-2 variants are designated as VOHC
For Covid Variants List and more details visit World Health Organization Website https://www.who.int/en/activities/tracking-SARS-CoV-2-variants/
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