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Volume 27, Number 1—January 2021

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)
2 (4.0)
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)
Other viruses 0
Bacteria 2 (4.0)¶
Clinical outcome#
In serious condition, ICU admission 3 (6.0)
Hospitalized, in stable condition 27 (54.0)
20 (40.0)
Interval from symptom onset to hospital admission, d**
Average (SD) 8.5 (3.9)
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 (
¶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
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