RESUMEN
Severe acute respiratory syndrome (SARS) is a new infectious disease in human, first recognized in November, 2002 in southern China. Since March, 2003, SARS has spread rapidly worldwide and the SARS outbreak was more than 8,098 cases from 29 countries. National surveillance system for SARS started from March 16, 2003 in Korea. We report the clinical, laboratory, and radiologic features of 3 probable cases of SARS diagnosed between April 22 and May 12, 2003 in Korea. The first case was a 41-year-old man who was diagnosed as a probable case of SARS because he had fever, cough, travel history to China, and radiologic finding of pneumonic infiltration. The second was an 81-year-old American who came from the Philippines and was going to America by way of Korea. He had fever, cough, and radiologic finding of pneumonic infiltration. The third was a 28-year-old man who noted fever, cough, travel history to Taiwan, and pneumonic infiltration on chest X-ray. Their symptoms were improved in 5-7 days after symptomatic treatment. The antibody test was negative in all patients.