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Original Article
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Volume 348:1986-1994 May 15, 2003 Number 20
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A Major Outbreak of Severe Acute Respiratory Syndrome in Hong Kong
Nelson Lee, M.D., David Hui, M.D., Alan Wu, M.D., Paul Chan, M.D., Peter Cameron, M.D., Gavin M. Joynt, M.D., Anil Ahuja, M.D., Man Yee Yung, B.Sc., C.B. Leung, M.D., K.F. To, M.D., S.F. Lui, M.D., C.C. Szeto, M.D., Sydney Chung, M.D., and Joseph J.Y. Sung, M.D.

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ABSTRACT

Background There has been an outbreak of the severe acute respiratory syndrome (SARS) worldwide. We report the clinical, laboratory, and radiologic features of 138 cases of suspected SARS during a hospital outbreak in Hong Kong.

Methods From March 11 to 25, 2003, all patients with suspected SARS after exposure to an index patient or ward were admitted to the isolation wards of the Prince of Wales Hospital. Their demographic, clinical, laboratory, and radiologic characteristics were analyzed. Clinical end points included the need for intensive care and death. Univariate and multivariate analyses were performed.

Results There were 66 male patients and 72 female patients in this cohort, 69 of whom were health care workers. The most common symptoms included fever (in 100 percent of the patients); chills, rigors, or both (73.2 percent); and myalgia (60.9 percent). Cough and headache were also reported in more than 50 percent of the patients. Other common findings were lymphopenia (in 69.6 percent), thrombocytopenia (44.8 percent), and elevated lactate dehydrogenase and creatine kinase levels (71.0 percent and 32.1 percent, respectively). Peripheral air-space consolidation was commonly observed on thoracic computed tomographic scanning. A total of 32 patients (23.2 percent) were admitted to the intensive care unit; 5 patients died, all of whom had coexisting conditions. In a multivariate analysis, the independent predictors of an adverse outcome were advanced age (odds ratio per decade of life, 1.80; 95 percent confidence interval, 1.16 to 2.81; P=0.009), a high peak lactate dehydrogenase level (odds ratio per 100 U per liter, 2.09; 95 percent confidence interval, 1.28 to 3.42; P=0.003), and an absolute neutrophil count that exceeded the upper limit of the normal range on presentation (odds ratio, 1.60; 95 percent confidence interval, 1.03 to 2.50; P=0.04).

Conclusions SARS is a serious respiratory illness that led to significant morbidity and mortality in our cohort.


Source Information

From the Departments of Medicine and Therapeutics (N.L., D.H., A.W., C.B.L., S.F.L., C.C.S., J.J.Y.S.), Microbiology (P. Chan), Emergency Medicine (P. Cameron), Anesthesia and Intensive Care (G.M.J.), Diagnostic Radiology and Organ Imaging (A.A.), Surgery (M.Y.Y., S.C.), and Anatomical and Cellular Pathology (K.F.T.), Chinese University of Hong Kong, Hong Kong, China.

This article was published at www.nejm.org on April 7, 2003.

Address reprint requests to Dr. Sung at the Department of Medicine and Therapeutics, Prince of Wales Hospital, Shatin, New Territories, Hong Kong, China, or at joesung{at}cuhk.edu.hk.

Full Text of this Article


Related Letters:

The Use of Corticosteroids in SARS
Oba Y., Lee N., Sung J.
Extract | Full Text | PDF  
N Engl J Med 2003; 348:2034-2035, May 15, 2003. Correspondence

Coronavirus Genomic-Sequence Variations and the Epidemiology of the Severe Acute Respiratory Syndrome
Tsui S. K.W., Chim S. S.C., Lo Y.M. D., the Chinese University of Hong Kong (CUHK) Molecular SARS Research Group
Extract | Full Text | PDF  
N Engl J Med 2003; 349:187-188, Jul 10, 2003. Correspondence

SARS in Hong Kong
Wu Y. P., Wei R., de Groot P. G.
Extract | Full Text | PDF  
N Engl J Med 2003; 349:708-709, Aug 14, 2003. Correspondence

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