δ1 variant of SARS-COV-2 acquires spike V1176F and yields a highly mutated subvariant in Europe

Genomic surveillance of SARS-COV-2 has revealed that in addition to many variants of interests, this virus has yielded four variants of concern, α, β, γ and δ, as designated by the World Health Organization. Delta variant has recently become the predominant pandemic driver around the world and yielded four different subvariants (δ1, δ2, δ3 and δ4). Among them, δ1 has emerged as the key subvariant…

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