摘要To the editor:H7N9 avian influenza is a new subtype to be seen in the world.An 87-year-old male,had decreased food appetite for half a month with fever and dyspnoea for 10 days.1 The patient began to feel poor appetite and loss of strength from April 4,2013.At that time,his body temperature was normal and he had no cough,sputum or dyspnoea.On April 6,examination at the referring hospital revealed that his body temperature was 37℃,white blood count (WBC)5.57×109/L,neutrophile granulocyte (N％) 53.5％.Inflammation of the lower lobe of the right lung was seen by chest CT.He was then treated with cefuroxime against possible bacterial infection for 3 days.On the night of April 9 he showed obviously increased dyspnoea after activity and had a body temperature of 38.4℃.