Extended Data Table 2.

The input and output viral RNA ratios in competition assays detected by sanger sequencing.

Groups	HAE			Calu-3
	Days	Input ratio	Output ratio	Hours	Input ratio	Output ratio
Delta vs Alpha	Day 1	1.24	2.10	24h	1.53	4.56
	Day 2	1.24	3.24	36h	1.53	10.65
	Day 3	1.24	3.17	48h	1.53	6.21
	Day 4	1.24	3.51
	Day 5	1.24	3.78
Delta vs Alpha-spike/Delta-backbone	Day 1	1.07	2.97
	Day 2	1.07	6.93
	Day 3	1.07	10.60
	Day 4	1.07	9.64
	Day 5	1.07	10.53
Alpha vs Alpha-spike/Delta-backbone	Day 1	1.45	0.59
	Day 2	1.45	0.46
	Day 3
	Day 4	1.45	0.22
	Day 5	1.45	0.15
Delta vs Delta-P681	Day 1	0.95	2.05
	Day 2	0.95	2.20
	Day 3	0.95	2.38
	Day 4	0.95	2.77
	Day 5	0.95	3.25
Alpha vs Delta-P681	Day 1	1.51	1.33
	Day 2	1.51	1.13
	Day 3	1.51	1.21
	Day 4	1.51	0.97
	Day 5	1.51	0.85