TABLE 2.

Comparison of replication sites of H9N2 viruses from chickens and other minor poultry species

Year	No. of H9N2 isolates/total sample no. (isolation rate [%])
	Chickens		Other minor poultry species
	Tracheal swabs	Fecal and cloacal swabs	Tracheal swabs	Fecal and cloacal swabs
2000	4/64 (6.3)	53/973 (5.4)	20/60 (33.3)	1/244 (0.4)
2001	4/41 (9.8)	71/2,019 (3.5)	29/126 (23)	1/145 (0.7)
2002	28/839 (3.3)	34/2,079 (1.7)	48/237 (20.3)	6/277 (2.2)
2003	37/3,520 (1.0)	29/4,572 (0.7)	34/116 (29.3)	24/791 (3.0)
2004	147/4,985 (3.0)	8/6,482 (0.1)	134/1,366 (9.8)	3/1,393 (0.2)
2005	724/11,086 (6.5)	50/10,756 (0.5)	27/1,103 (2.4)	1/1,067 (0.1)
Total	944/20,535 (4.6)	245/26,690 (0.9)	292/3,008 (9.7)	36/3,917 (0.9)