Table 2.

Relative L₂ percentile of viral codon adaptation to their hosts

	Tax	ID	Virus–hosts	% L2 similaritya
1	M	HUM	Human	4
2		SQUM	Squirrel monkey	77
3		MAC	Macaque	53
4		RAT	Rat	8
5		MOUS	Mouse	67
6		PIG	Pig	72
7		BOVN	Bovine	53
8		SHP	Sheep	86
9		HORS	Horse	54
10		CAT	Cat	45
11		DOG	Dog	57
12	A	CHK	Chicken	51
13	I	MOSQ	Tiger mosquito	63
14		COMO	Codling moth	44
15		CHIL	Rice stem borer	69
16		AMMO	Noctuid moth	15
17	P	ARAB	Arabidopsis	9
18		LET	Lettuce	12
19		RICE	Rice	18
20		TOM	Tomato	1
21	B	BACI	Bacillus	1
22		CHLM	Chlamydia	57
23		ENCO	Enterococcus	11
24		LACO	Lactococcus	13
25		MYBC	Mycobacteria	2
26		MYPL	Mycoplasma	7
27		PSDO	Pseudomonas	19
28		SALM	Salmonella	12
29		STRP	Streptomyces	36
30		ECOL	Escherichia coli	36

^aRelative L₂ percentile values calculated between virus and host, where lower values indicate higher observed similarity (see Figure 6B). The most adapted virus–host pairs are indicated in bold.