A health worker sprays disinfectant at a poultry farm in Dayang Township of Bozhou City, east China's Anhui Province, April 9, 2013. Two patients from east China's Anhui and Jiangsu provinces who were confirmed as H7N9 cases days ago died of the avian influenza on Tuesday afternoon. This has brought the total number of deaths caused by the H7N9 bird flu in the country to nine. So far, China has reported a total of 28 H7N9 cases, including nine which ended in fatalities. (Photo: Xinhua)
