Table 2.

Comparison of S protein identity (genome, nucleobase, amino acid) between common animal coronavirus and SARS‐CoV‐2

SARS‐CoV‐2	Alpha‐CoV			Beta‐CoV		Gamma‐CoV	Delta‐CoV
	Porcine (PEDV, TGEV)	Canine	Feline	Porcine (PHEV)	Bovine	Chicken	Porcine (PDCoV)
Genome	42.8−43.5%	43.6−44.0%	43.3−43.6%	49.2−49.3%	49.2−49.3%	43.0−43.2%	40.3−40.4%
S Protein
Nucleobase	37.1−38.7%	38.5−40%	39.20%	43.4−43.5%	43.90%	40.9−41.1%	38.5−39.0%
Amino acid	20.3−22.1%	20.80%	20.30%	28.8−29.0%	28.8−29.2%	22.2−22.3%	21.9−22.6%