Delta Growth

The Delta variant is changing and adds new mutations. The consensus sequence according to Pango has 30 mutations now. Notice that there are multiple definitions of Delta. The W.H.O defines the Delta differently – as Pango B.1.617.2. Pango B.1.617.2 is not Delta, but the top node of multiple lineages, also included in the Delta (AY.1, AY.2, … AY.30, …). The consensus sequence of B.1.617.2 has fewer mutations.

The real world has Pango Delta. The current Delta sequence (See the Characteristic mutations of Delta), including all the characteristic mutations, is dominant in the US, UK, and worldwide.>70% in the US

USA, snapshot 2021-10-17

>90% in the UK

>80% Worldwide

(the sampling is biased)

Characteristic mutations of Delta

gene	amino acid
ORF1a	A1306S
ORF1a	P2046L
ORF1a	P2287S
ORF1a	V2930L
ORF1a	T3255I
ORF1a	T3646A
ORF1b	P314L
ORF1b	G662S
ORF1b	P1000L
ORF1b	A1918V
S	T19R
S	E156G
S	del157/158
S	L452R
S	T478K
S	D614G
S	P681R
S	D950N
ORF3a	S26L
M	I82T
ORF7a	V82A
ORF7a	T120I
ORF7b	T40I
ORF8	S84L
ORF8	del119/120
N	D63G
N	R203M
N	G215C
N	D377Y