TABLE 1.

Subtypes and genotypes of viruses featured in this study

Virus name	Subtype	Phylogenetic lineage of RNA segments
		PB2	PB1	PA	HA	NP	NA	M	NS
A/Swine/Ontario/52156/03	H1N2	Human	Human	Human	Human	Human	Human	Human	Human
A/Swine/Ontario/48235/04	H1N2	Classical swine	Human	Classical swine	Human	Classical swine	Human	Classical swine	Classical swine
A/Swine/Ontario/55383/04	H1N2	Classical swine	Human	Classical swine	Human	Classical swine	Human	Classical swine	Classical swine
A/Swine/Ontario/53518/03	H1N1	Classical swine	Human	Classical swine	Classical swine	Classical swine	Classical swine	Classical swine	Classical swine
A/Swine/Ontario/11112/04	H1N1	Classical swine	Human	Classical swine	Classical swine	Classical swine	Classical swine	Classical swine	Classical swine
A/Swine/Ontario/23866/04	H1N1	Classical swine	Human	Classical swine	Classical swine	Classical swine	Classical swine	Classical swine	Classical swine