New COVID variants
- The WHO has identified 3 major new variants of the SARS-CoV-2 virus, which are more lethal and faster spreaders than the original version. 1.
UK STRAIN
- The UK variant (B.1.1.7) – Originated in UK in September 2020 and increased the risk of death.
- It is 70% more contagious than the original Wuhan strain.
SOUTH AFRICA STRAIN
- The South Africa variant (B.1.351 or 20H/501Y.V2) – First identified in South Africa.
- It was reported in the US at the end of January 2021.
- It carries a mutation called N501Y, that appears to make it 50% more contagious or easy to spread.
- It is less susceptible to antibody action.
- The South Africa variant is showing unusually large number of mutations, especially in the ‘Spike protein’ of the virus.
BRAZIL VARIANT
- The Brazil variant (P.1) – Emerged in Manaus, Brazil.
- It is known to have 17 unique mutations.
- Three of these, mutations are in the receptor-binding domain of the spike protein.
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