Medical workers take part in an exercise on dealing with a bird flu emergency at a hospital in Zibo in east China's Shandong province, Friday, April 12, 2013. A 7-year-old girl has become the first confirmed case in Beijing of the latest strain of H7N9 bird flu virus, which has killed 11 and sickened 32 in eastern China, officials said Saturday. (AP Photo) CHINA OUT
China bird flu crisis
The H7N9 flu has infected 108 people in China since it was first detected in March, according to the World Health Organization. The new strain of avian flu has killed 22 people among confirmed cases.