Parents line up with their children outside the fever clinic of Beijing Children’s Hospital on Thursday evening. Influenza cases are on the rise in the capital, with type A flu accounting for the majority of infections. Photo: Li Congxun, intern reporter/Caixin

A mother pushes her child in a trolley. The fever clinic received more than 4,000 patients on Feb. 27, a staff member of the hospital said. Photo: Li Congxun, intern reporter/Caixin

Children wait to see a doctor. Influenza type A is one of the most common strains among seasonal flu epidemics. Photo: Li Congxun, intern reporter/Caixin

Parents seek medical treatment for their child who has a fever in the emergency department of the hospital. Flu affects the nose, throat and lungs, causing symptoms including fever, chills, headache and sore throat. Photo: Li Congxun, intern reporter/Caixin

A man carries his child to see a doctor in the fever clinic. Photo: Li Congxun, intern reporter/Caixin

A child sits on her father’s shoulder waiting for treatment. Photo: Li Congxun, intern reporter/Caixin

The latest data from the Beijing Center for Disease Prevention and Control shows that between Feb. 20 and Feb. 26 the capital reported 15,607 infectious diseases cases, influenza-like infections were among the top five most common of the reported cases. Photo: Li Congxun, intern reporter/Caixin