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Epidemiological characteristics of asymptomatic Norovirus infection in a population from oyster (Ostrea rivularis Gould) farms in southern China.
Wang, Anna; Huang, Qiong; Qin, Lin; Zhong, Xianwu; Li, Hui; Chen, Rongfeng; Wan, Zhuang; Lin, Hong; Liang, Junhua; Li, Jiansen; Zhuang, Yali; Zhang, Yonghui.
Afiliação
  • Wang A; Guangzhou Center for Disease Control and Prevention,Guangzhou,Guangdong,China.
  • Huang Q; Guangdong Provincial Center for Disease Control and Prevention,Guangzhou,Guangdong,China.
  • Qin L; Guangdong Provincial Center for Disease Control and Prevention,Guangzhou,Guangdong,China.
  • Zhong X; Guangzhou Center for Disease Control and Prevention,Guangzhou,Guangdong,China.
  • Li H; Guangdong Provincial Center for Disease Control and Prevention,Guangzhou,Guangdong,China.
  • Chen R; Guangdong Provincial Center for Disease Control and Prevention,Guangzhou,Guangdong,China.
  • Wan Z; Guangdong Provincial Center for Disease Control and Prevention,Guangzhou,Guangdong,China.
  • Lin H; Guangdong Provincial Center for Disease Control and Prevention,Guangzhou,Guangdong,China.
  • Liang J; Guangdong Provincial Center for Disease Control and Prevention,Guangzhou,Guangdong,China.
  • Li J; Guangdong Provincial Center for Disease Control and Prevention,Guangzhou,Guangdong,China.
  • Zhuang Y; Southern Medical University,Guangzhou,Guangdong,China.
  • Zhang Y; Guangdong Provincial Center for Disease Control and Prevention,Guangzhou,Guangdong,China.
Epidemiol Infect ; 146(15): 1955-1964, 2018 11.
Article em En | MEDLINE | ID: mdl-30132423
ABSTRACT
The following paper investigates the prevalence and characteristics of asymptomatic norovirus infection in the population living around oyster farm sites. Two consecutive surveys were conducted from January 2014 to December 2014 and 4549 stool samples were screened during the same time period. The total asymptomatic infection rate was 4.04% (184/4549). Norovirus infection rate was 5.20% in oyster farming population which was significantly higher compared with non-farming population where the infection rate was 3.65% (χ2 = 5.49, P < 0.05). A total of 184 NoV positive samples were identified by real time-quantitative polymerase chain reaction (RT-qPCR) and semi-nested RT-PCR and 136 sequences were obtained. The sequences were clustered into 14 genotypes. GI strains were clustered into six genotypes, including GI.2, GI.3, GI.5, GI.6, GI.8 and GI.9; while GII strains were clustered into GII.2, GII.3, GII.4, GII.5, GII.6, GII.8 and GII.13. GI.9 and GII.17 were the predominant and most prevalent genotypes, respectively. The GII.17 genotype replaced GII.4 becoming the dominant genotype in the oyster farming area in 2014. To sum up, long-term monitoring of asymptomatic infection is crucial for the detection of new variant strains and for identifying outbreaks during the early stage.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Ostreidae / Infecções por Caliciviridae / Norovirus / Fezes Tipo de estudo: Prevalence_studies / Prognostic_studies / Risk_factors_studies Limite: Animals / Humans País/Região como assunto: Asia Idioma: En Ano de publicação: 2018 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Ostreidae / Infecções por Caliciviridae / Norovirus / Fezes Tipo de estudo: Prevalence_studies / Prognostic_studies / Risk_factors_studies Limite: Animals / Humans País/Região como assunto: Asia Idioma: En Ano de publicação: 2018 Tipo de documento: Article