3.1 Outbreak description
The first case was a 23-years-old male with final death. 14 confirmed cases, including 8 laboratory-confirmed cases and 6 silent-infection cases were identified in the investigation. The overall attack rate of this outbreak was 18.7%, with the highest attack rate of 25% in home, followed by 19.1% in respiration apartment and 16% in emergency apartment.
Among the 8 patients with clinic symptoms, the admitting diagnosis was 4 with upper respiratory infection, 3 with HAdV pneumonia and 1 with severe pneumonia (the first/index case, death). Clinical manifestations included fever (100%) with the highest at 40℃ and most cases presented with sore throat (75%), cough (62.5%), headache (37.5%), and fatigue (12.5%).