Students get the A/H1N1 influenza vaccination in turns from medical staff with local center for disease control and prevention, at Dongning County, northeast China's Heilongjiang Province, Oct. 28, 2009. China steps up nationwide vaccination programs with its maximal capacity to supply its domestic population with influenza vaccines. (Xinhua/Tian Chengming)

Teachers and students get the A/H1N1 influenza vaccination in turns from medical staff with local center for disease control and prevention, at Yuncheng City, north China's Shanxi Province, Oct. 28, 2009.(Xinhua/Wei Xingzhi)

A man gets the A/H1N1 influenza vaccination from medical staff with local center for disease control and prevention, at Xingtai City, north China's Hebei Province, Oct. 27, 2009.(Xinhua/Chen Lei)

Armed policemen with the Chinese People's Armed Police Forces Fujian Provincial Corps get the A/H1N1 influenza vaccination in turn from medical staff with local center for disease control and prevention, at Fuzhou City, southeast China's Fujian Province, Oct. 28, 2009.(Xinhua/Tian Chengming)

A medical staff with local center for disease control and prevention holds high two pyxises of vaccination against A/H1N1 flu virus, at Dongguan City, south China's Guangdong Province, Oct. 28, 2009.(Xinhua/Chen Fan)