Table 1.

H5N1 influenza virus activity and genotype distribution in China, 1996–2006

Year	Province (genotype)
1996	Guangdong#(Gs/GD)
1997	Guangdong (Gs/GD, HK/97-like), Hubei (Hubei-like)
1999	Guangdong (Gs/GD)
2000	Fujian (F), Guangdong (Gs/GD, Gs/GD−, C, T1), Guangxi (ND*), Jiangsu (ND),b Zhejiang (Gs/GD1, W)
2001	Fujian (B, W), Guangdong (Gs/GD−, A–E, X0, X10, W1, B2, T3), Guangxi (B, B1,Z), Hebei (Hubei-like), Henan (ND), Jiangsu (ND), Shanghai (Gs/GD−, C, X0), Zhejiang (ND).
2002	Fujian (X7), Guangdong (X0-X3, X9, B, B3, Z, Z+,W), Guangxi (X6), Hebei (X8), Henan (ND), Hubei (ND), Hunan (Z), Jiangsu (B), Jilin (ND), Shanghai (X4, X5, Z), Yunnan (Z), Zhejiang (ND).
2003	Beijing (V), Fujian (B, W), Guangdong (Z, V), Guangxi (ND), Henan (ND), Hubei (V), Hunan (Z), Jiangsu (ND), Jilin (T4, Z), Shangdong (ND), Yunnan (Z)
2004	Anhui (ND), Fujian (Z+), Guangdong (Z, V, V1, Hubei-like), Guangxi (Z, W, G, W2, Hubei-like), Henan (Z, Hubei-like), Hubei (Z), Hunan (Z, V), Jiangsu (ND), Jilin (T5), Shandong (B, X0, Hubei-like), Shanghai (Z), Yunnan (Z)
2005	Anhui (ND), Fujian (Z, V), Guangdong (Z, V, V1), Guangxi (Z, V, G), Guizhou (Z, G, V), Hebei (V), Hubei (ND), Hunan (Z, V, G, T6), Jiangsu (ND), Jiangxi (Z, V), Qinghai (Z), Yunnan (Z, V, G), Zhejiang (ND).
2006	Fujian (V), Guangdong (Z, V, G, V2, V4), Guangxi (V, G), Guizhou (G, V, V3), Hunan (Z, V), Jiangsu (ND), Qinghai (Z), Shanxi (V), Yunnan (V), Zhejiang (V)

^#Includes Hong Kong S.A.R and Shantou

^*ND, denotes genotype could not be determined as full genome is not available