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| Small Round Structured Virus (SRSV) Outbreak Among Elementary School Students in Wonju Province |
| Unyeong Go, M.D., MPH, Young Hak Shin, Ph.D, Jung Sik Yoo, MEng.Youngmee Jee, M.D., Ph.D*, Ki Soon Kim, Ph.D* and Jae-Deuk Yoon, MSc* |
| Division of Epidemiology, Department of Infectious Diseases Control, Laboratory of Enteroviruses,Department of Virology*, National Institute of Health, Seoul, Korea |
Vol.33 Num.3 (p210~213)
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Small Round Structured Virus (SRSV) is a common cause of non-bacterial acute gastroenteritis in developed countries. In 30 June 1999, a large number of gastroenteritis cases occurred among elementary school children in Wonju province, who had attended the summer camp from 28 to 30 June 1999. We interviewed those students and performed both bacteriological and virological examinations. The reported cases occurred from 30 June, peaked on 1 July and decreased from 2 July, which suggested the point source outbreak pattern. The attack rate was 22.5% according to the clinical case definition which is defined as those who have more than two symptoms among, vomiting, abdominal pain and diarrhea. The most common symptom was diarrhea (48.0%), followed by abdominal pain (38.1%) and vomiting (17.1%). The duration of diarrhea was one to two days. Among the 352 stool examinations, all of the following organisms, Salmonella spp, Shigella spp. and EHEC O157, were negative, and in virological examinations of 5 stool specimens for rotavirus, enterovirus, and SRSV, one specimen was positive for SRSV. Sequence analysis showed that detected SRSV was closely related to genogroup I. We concluded that SRSV might be the possible cause of this outbreak |
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Keywords : Small round structured virus, SRSV, Summer camp, Point source outbreak |
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