Table 4.

Years and countries of origin of each form of NS1 C-terminal end truncation among avian influenza viruses from 1902–2015.

ΔCTE	Years*	Country	State/city	Host****	Subtype	Pathotype
NS202	1956, 2000	Slovakia	Košice	Duck	H4N6	LP
NS207	2005	USA	Maryland	Long tailed duck	H10N8	LP
NS212	2006, 2013	China	Guiyang	Chicken/geese	H5N1	HP
NS214	2013	China	Shanghai	Chicken	H7N9	LP
NS216	1995	Pakistan	Murree	Chicken	H7N3	HP
NS217	1983, 2015	USA	Pennsylvania	Chicken	H5N2	HP
NS219	1977, 2014	Japan	Hokkaido	Budgerigar	H4N6	LP
NS220	1999, 2013	Italy	Northern Italy**	Turkey/chicken	H7N1	HP
NS224	1999, 2000	Italy	Northern Italy**	Turkey/chicken	H7N1	HP
NS225	2005, 2011	Pakistan	Sialkot	Chicken	H9N2	LP
NS227	2003	Taiwan	Taichung City***	Chicken	H6N1	LP
NS228	2001, 2008	Vietnam	Hanoi	Goose	H5N1	HP
NS229	1999	China	Guangxi	Duck	H5N1	HP
NS230	1902, 2015	Italy	Brescia	Chicken	H7N7	HP

LP=low pathogenic; HP= highly pathogenic

^*Years of first emergence and last time of isolation of a certain form regardless of the AIV subtype

^**Veneto, Lombardia and Emilia Romagna regions ¹⁴

^***Refer to the location of the diagnostic laboratory because the exact location was not defined ⁴²

^****Refer to the origin host (first isolation)