Table 5. Comparison of amino acid substitutions in the functional domains of the HN protein.

Strains	Antigenic sites
	1	2				3			4			12		14			23
	345	513	514	521	569	263	287	321	332	333	356	494	516	347	350	353	193	194	201
LaSota	P	R	I	S	D	N	D	K	G	K	K	G	R	E	Y	R	L	S	H
Toucan/China/3/2018	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-

Dots indicate residues identical to LaSota.