A 44-year-old male was admitted to the hospital 1 day after fever and cough with a body temperature of 39 °C. The leukocytes were normal and lymphocytes were decreased. He was living in Zhuhai and traveled to Macao 12 days before the onset of the disease and stayed in Macao for 1 week. He was healthy and nonsmoker. Chest CT (images a–c) on the 4th day after admission demonstrated bilateral peripheral ground-glass opacities without consolidation. TSS was 9. The clinical type was severe-critical type. Follow-up CT (images d, e) on the 22nd day after onset showed bilateral fibrotic changes with traction bronchiectasis and ground-grass opacities