A nurse takes care of a H7N9-contracted patient at the Nanjing Drum Tower Hospital in Nanjing, capital of east China's Jiangsu Province, April 12, 2103. A seven-year-old girl in Beijing was infected with the H7N9 strain of bird flu, the first such case in the Chinese capital, local health authorities said Saturday. The new case raised the number of H7N9 infections in China to 44, with all the other 43 in the eastern parts of the country. The first known human infections have claimed the lives of 11 people, according to the National Health and Family Planning Commission. (Xinhua/Sun Can)

A nurse puts on an isolation garment before entering the ward of H7N9-contracted patient at the Nanjing Drum Tower Hospital in Nanjing, capital of east China's Jiangsu Province, April 12, 2103. A seven-year-old girl in Beijing was infected with the H7N9 strain of bird flu, the first such case in the Chinese capital, local health authorities said Saturday. The new case raised the number of H7N9 infections in China to 44, with all the other 43 in the eastern parts of the country. The first known human infections have claimed the lives of 11 people, according to the National Health and Family Planning Commission. (Xinhua/Sun Can)

A nurse takes care of a H7N9-contracted patient at the Nanjing Drum Tower Hospital in Nanjing, capital of east China's Jiangsu Province, April 12, 2103. A seven-year-old girl in Beijing was infected with the H7N9 strain of bird flu, the first such case in the Chinese capital, local health authorities said Saturday. The new case raised the number of H7N9 infections in China to 44, with all the other 43 in the eastern parts of the country. The first known human infections have claimed the lives of 11 people, according to the National Health and Family Planning Commission. (Xinhua/Sun Can)