Parents accompany their children having IV drip at the temporary transfusion area of Beijing Children's Hospital in Beijing, capital of China, Jan. 13, 2013. Beijing was shrouded in dense smog for a 3rd straight day on Sunday. Winter has always been a high-occurrence season for respiratory infection diseases. The recent smog in Beijing caused an increase in children's respiratory infection. (Xinhua/Luo Xiaoguang)
