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J Bacteriol Virol. 2016 Sep;46(3):142-151. Korean. Original Article.
Kee HY , Kim MJ , Kim SH , Ha DR , Kim ES , Jeong HS , Chung JK , Seo KW .
Health and Environment Institute of Gwangju, Gwangju, Korea.
Korea Centers for Disease Control & Prevection, Gwangju, Korea.

In order to study the characteristics of norovirus in Gwangju metropolitan city, We examined norovirus in 13,931 fecal specimens collected through five years (2008-2012) from children admitted with a chief complain of acute diarrhea. Among a total of norovirus (NoV) was most frequently detected (3,025 cases, 21.7%). Concerning the frequency of virus detected by month, NoV tended to break out frequently from October to March in the following year. NoV was detected most highly in 0~3 year infants. Through examinations on NoV genotypes, among 3,025 cases that turned out to be positive, the genotypes of 2,652 cases were determined with various results including 13 types of GI and 17 types of GII. The results of analysis on GI genotypes were as follows: GI-4 (21.9%), GI-2 (15.2%), and GI-6 (10.5%). GII genotypes were as follows: GII-4 (63.9%), GII-3 (18.9%), GII-8 (4.2%), GII-2 (3.9%), GII-6 (3.3%), and GII-1 (1.9%). Eight types of variants for GII-4 genotype (427 cases) were identified. The majority of the GII-4 variants was GII-4_Farmington (181 cases, 42.4%), which peaked in 2012, while GII-4_2008b (173 cases, 40.5%) showed a high prevalence in 2011. Concerning the circulation of variants, as many as eight types of GII-4 variants were identified in 2012, showing more varieties than in other years. Therefore, this study can be used as fundamental data for the development of vaccine candidate for the prevention of viral diarrheal diseases with high-incidence.

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