Chinese Premier Li asks about bird flu virus while visiting health authorities

Chinese Premier Li Keqiang shakes hands with staff members of the Chinese Center for Disease Control and Prevention (CDC) in Beijing, capital of China, April 28, 2013. Li urged authorities to be vigilant against the H7N9 avian flu virus and prepare themselves for any new developments.

Chinese Premier Li Keqiang (3rd L) inquires information about the H7N9 virus at a lab in the Chinese Center for Disease Control and Prevention (CDC), in Beijing, capital of China, April 28, 2013. <Xinhua/Li Tao>