Contact patterns between index patients and their close contacts and assessing risk for COVID-19 transmission during different exposure time windows: a large retrospective observational study of 450 770 close contacts in Shanghai

• Main Authors: Weibing Wang (Author), Hao Pan (Author), Bo Zheng (Author), Chenyan Jiang (Author), Yaxu Zheng (Author), Huanyu Wu (Author), Shenghua Mao (Author), Ye Yao (Author), Xiaohuan Gong (Author), Sheng Lin (Author), Bihong Jin (Author), Dechuan Kong (Author)
• Format: Book
• Published: BMJ Publishing Group, 2024-03-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

Introduction To characterise age-mixing patterns among index cases and contacts of COVID-19, and explore when patients are most infectious during the disease process.Methods This study examined all initial 90 885 confirmed index cases in Shanghai and their 450 770 close contacts. A generalised addit...