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Volume 27, Number 9—September 2021

Transmission of Severe Acute Respiratory Syndrome Coronavirus 2 to Close Contacts, China, January–February 2020

Yu Li1, Jianhua Liu1, Zhongcheng Yang1, Jianxing Yu, Chengzhong Xu, Aiqin Zhu, Hao Zhang, Xiaokun Yang, Xin Zhao, Minrui Ren, Zhili Li, Jinzhao Cui, Hongting Zhao, Xiang Ren, Chengxi Sun, Ying Cheng, Qiulan Chen, Zhaorui Chang, Junling Sun, Lance E. Rodewald, Liping Wang, Luzhao Feng, George F. Gao2, Zijian Feng2, and Zhongjie LiComments to Author 
Author affiliations: Chinese Center for Disease Control and Prevention, Beijing, China (Y. Li, J. Yu, A. Zhu, X. Yang, M. Ren, Zhili Li, J. Cui, H. Zhao, X. Ren, C. Sun, Y. Cheng, Q. Chen, Z. Chang, J. Sun, L.E. Rodewald, L. Wang, L. Feng, G.F. Gao, Z. Feng, Zhongjie Li); Yichang Center for Disease Control and Prevention, Yichang, China (J. Liu, Z. Yang, C. Xu, H. Zhang, X. Zhou)

Main Article

Table 1

Characteristics of 476 index case-patients and 2,382 close contacts in study of transmission of severe acute respiratory syndrome coronavirus 2 to close contacts, China, January–February 2020*

Characteristic Index case-patients Close contacts
Age, y, mean (range)
49 (2–91)
43 (0–94)
Age group, y
<18 5 (1) 267 (12)
18–59 339 (71) 1,559 (68)
132 (28)
465 (20)
M 262 (55) 1,162 (49)
F 214 (45) 1,198 (51)

*Values are no. (%) unless otherwise indicated.

Main Article

1These authors contributed equally to this article.

2These authors are the senior authors.

Page created: June 21, 2021
Page updated: August 17, 2021
Page reviewed: August 17, 2021
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