Genetic Diversity and Distribution of Human Norovirus in China (1999–2011)
Geographical distribution of NoVs in China. (a) Sequence distribution map. The color-coding of each region is as follows: North China district (blue) includes Hebei, Shanxi, Beijing, and Tianjin; South China district (green) includes Guangdong, Guangxi, Hainan, and Hong Kong; East China district (red) includes Anhui, Shandong, Henan, Shanghai, Jiangsu, Zhejiang, and Fujian; North-East China district (purple) includes Jilin and Liaoning; West China district (yellow) includes Gansu, Xinjiang, Shanxi, Sichuan, Chongqing, Guizhou, and Yunnan. (b) Genotype distribution.