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Volume 27, Number 1—January 2021
Research

Territorywide Study of Early Coronavirus Disease Outbreak, Hong Kong, China

Kenneth Siu-Sing Leung, Timothy Ting-Leung Ng, Alan Ka-Lun Wu, Miranda Chong-Yee Yau, Hiu-Yin Lao, Ming-Pan Choi, Kingsley King-Gee Tam, Lam-Kwong Lee, Barry Kin-Chung Wong, Alex Yat Man Ho, Kam-Tong Yip, Kwok-Cheung Lung, Raymond Wai-To Liu, Eugene Yuk-Keung Tso, Wai-Shing Leung, Man-Chun Chan, Yuk-Yung Ng, Kit-Man Sin, Kitty Sau-Chun Fung, Sandy Ka-Yee Chau, Wing-Kin To, Tak-Lun Que, David Ho-Keung Shum, Shea Ping Yip, Wing Cheong Yam, and Gilman Kit-Hang SiuComments to Author 
Author affiliations: The University of Hong Kong, Hong Kong, China (K.S.-S. Leung, K.K.-G. Tam, W.C. Yam); The Hong Kong Polytechnic University, Hong Kong (T.T.-L. Ng, H.-Y. Lao, M.-P. Choi, L.-K. Lee, D.H.-K. Shum, S.P. Yip, G.K.-H. Siu); Pamela Youde Nethersole Eastern Hospital, Hong Kong (A.K.-L. Wu, M.C.-Y. Yau, K.-C. Lung); United Christian Hospital, Hong Kong (B.K.-C. Wong, E.Y.-K. Tso, K.S.-C. Fung, S.K.-Y. Chau); Princess Margaret Hospital, Hong Kong (A.Y.-M. Ho, W.-S. Leung, M.-C. Chan, W.-K. To); Tuen Mun Hospital, Hong Kong (K.-T. Yip, Y.-Y. Ng, K.-M. Sin, T.-L. Que); Ruttonjee Hospital, Hong Kong (R.W.-T. Liu)

Main Article

Table 2

Clinical characteristics and outcomes of 50 coronavirus disease patients, Hong Kong, February 2020*

Characteristic Case-patients, 
n = 50*
Signs and symptoms
Fever at admission 29 (58.0)
Fever during hospitalization 32 (64.0)
Cough 37 (74.0)
Sore throat 12 (24.0)
Shortness of breath 12 (24.0)
Muscle ache 12 (25.0)†
Diarrhea 7 (14.3)‡
Rhinorrhea 4 (8.0)
Nausea and vomiting 4 (8.2)‡
Confusion 1 (2.0)
>1 sign or symptom 41 (82.0)
Asymptomatic
2 (4.0)
Complications§
Acute respiratory distress syndrome 2 (4.0)
Acute respiratory injury 1 (2.0)
Acute renal injury 5 (10.0)
Septic shock 1 (2.0)
>1 complication 2 (4.0)
No complications
45 (90.0)
Radiological findings
Unilateral pneumonia 11 (22.0)
Bilateral pneumonia 27 (54.0)
Multiple areas of mottling and ground-
glass opacity 17 (34.7)‡
No abnormality
4 (8.0)
Coinfection
Other viruses 0
Bacteria 2 (4.0)¶
Fungi
0
Clinical outcome#
In serious condition, ICU admission 3 (6.0)
Hospitalized, in stable condition 27 (54.0)
Discharged
20 (40.0)
Interval from symptom onset to hospital admission, d**
Average (SD) 8.5 (3.9)
Range
1–26
Length of hospital stay, d††
Average (SD) 17.7 (7.7)
Range 8–35

*Values are no. (%) except as indicated. ICU, intensive care unit.
†Data were missing for 2 patients. 
‡Data were missing for 1 patient. 
§Definitions of complications are provided in Appendix 2 (https://wwwnc.cdc.gov/EID/article/27/1/20-1543-App2.pdf).
¶Moderate growth of Klebsiella aerogenes and Ralstonia pickettii bacteria were obtained from sputum specimens collected from case 38 and 70.
#Data cutoff of the clinical outcome of patients was February 28, 2020.
**Data from symptomatic patients were excluded.
††Calculated based on the 18 patients who had been discharged as of February 28, 2020.

Main Article

Page created: November 23, 2020
Page updated: December 21, 2020
Page reviewed: December 21, 2020
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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