1. 2018-2019年上海市普陀区 16 起聚集性呕吐腹泻疫情中诺如病毒的流行与分析.
- Author
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闫 浩, 顾文超, 吴婷婷, 李 勇, 张 玉, and 唐海丰
- Abstract
Objective To understand the genotyping and epidemiological characteristics of norovirus in 16 clusters of vomiting and diarrhea in Putuo District of Shanghai, and to provide technical support and data reference for the treatment and prevention of clusters of vomiting and diarrhea caused by norovirus in the district and the whole city. Methods A total of 136 anal swab samples were collected from people involved in 16 clusters of vomiting and diarrhea outbreaks in Putuo District of Shanghai from 2018 to 2019. The nucleic acid of norovirus was detected by real-time fluorescence polymerase chain reaction. The polymerase-capsid protein link region was amplified by real-time fluorescence polymerase chain reaction and sequenced in the positive samples of typical cases. Genotyping and phylogenetic tree were constructed by bioinformatics tools. Results Among the 136 specimens,62 (45.59%) were positive for norovirus G II nucleic acid, and zero was positive for norovirus GI nucleic acid. 42 noroviruses were successfully sequenced, and four genotypes were obtained by sequence alignment analysis. Among the 16 clusters of vomiting and diarrhea outbreaks, nine were G II. P16-GII. 2 (56.25%),two were G II. P7-GII.6 (12.50%), two were GII. P12-GII.3 (12.50%), and three were G II. Pe-GII.4 (18.75%). Conclusion Norovirus is an important pathogen causing clustered vomiting and diarrhea in Putuo District of Shanghai from 2018 to 2019. It is mainly G II group and has a variety of genotypes. among which GII. P16-GII.2 is the main epidemic strain. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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