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http://dx.doi.org/10.5352/JLS.2016.26.9.999

Epidemiological Study of Outbreak of Gastroenteritis Associated with Norovirus and Astrovirus in Busan, Korea  

Koo, Hee Soo (Busan Metropolitan Government Research Institute of Public Health & Environment)
Jo, Hyeon Cheol (Busan Metropolitan Government Research Institute of Public Health & Environment)
Baik, Hyung Suk (Department of Microbiology, Pusan National University)
Publication Information
Journal of Life Science / v.26, no.9, 2016 , pp. 999-1006 More about this Journal
Abstract
This paper studies an infection of norovirus and astrovirus in outbreaks in Korea. In March 2016, gastroenteritis outbreaks occurred in Busan. 522 students of three departments at university D had meeting at a restaurant near the university. Some of them had symptom such as diarrhea, vomiting. Epidemiological, laboratory and environmental investigations were performed to identify the agents of the outbreaks. Fecal specimens were collected from 35 students and 7 food handlers to identify causative viral agents. Norovirus genogroup GI and GII were detected from diarrhea patients. Astrovirus was also detected from some of them. In particular, these outbreaks were the first occurrence associated with astrovirus in Busan. Total of 42 samples were collected, and 24 samples resulted in positive to norovirus (16 cases) and astrovirus (8 cases). To identify the molecular genetic information of norovirus, we carried out sequences analysis of the detected strains. Norovirus genotypes were classified into GI.3, GI.4, GII.4, GII.13, GII.17 and GII.21. Astrovirus genotypes were seven astrovirus type 5 and one astrovirus type 2. We performed environmental investigation about water at the kitchen, but norovirus and astrovirus were not detected. The statistical analysis was conducted to evaluate the association between illness and risk factors. The results of this study may contribute to accumulate more the epidemiological data and develop the public health and hygiene.
Keywords
Astrovirus; molecular epidemiology; outbreaks;
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