Clinical symptoms of H5N1 influenza are mainly involved with pneumonia with infiltrates, respiratory distress, tachypnea, and inspiratory crackles.

• 禽流感的症状主要是浸润性的肺炎、呼吸困难、呼吸急促、吸气暴裂声。包括心、肾的多重器官衰竭亦为常见。