Table 1. Avian influenza virus isolates used in the study

Isolates	Date of isolation	Subtype	Host species	Location
A/common teal/Korea/KNU12-15/2012	Dec-2012	H7N1	Common teal (Anas crecca)	Jeju-do, Jeju-si
A/mallard/Korea/KNU13-3/2013	Jan-2013	H7N1	Mallard (Anas platyrhynchos)	Jeju-do, Jeju-si
A/mallard/Korea/KNU10-3/2010	Apr-2010	H7N7	Mallard (Anas platyrhynchos)	Gangwon-do, Sokcho-si
A/mallard/Korea/KNU11-12/2011	Dec-2011	H7N7	Mallard (Anas platyrhynchos)	Gangwon-do, Gangneung-si
A/common teal/Korea/KNU13-1/2013	Jan-2013	H7N7	Common teal (Anas crecca)	Jeju-do, Jeju-si
A/common teal/Korea/KNU13-7/2013	Feb-2013	H7N7	Common teal (Anas crecca)	Jeju-do, Jeju-si