Molecular epidemiological characteristics of the virus in 96 children with acute diarrhea in Changdu of Tibet, China

MAO Jun-Wen; YANG Ya-Li; SHI Chang-Chun; CHEN Zhu; LI Chun; WANG Yong-Ming; LI Lin-Bin; CHEN Jun-Hua

doi:10.7499/j.issn.1008-8830.2110012

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Chinese Journal of Contemporary Pediatrics ›› 2022, Vol. 24 ›› Issue (3) : 266-272. DOI: 10.7499/j.issn.1008-8830.2110012

CLINICAL RESEARCH

Molecular epidemiological characteristics of the virus in 96 children with acute diarrhea in Changdu of Tibet, China

MAO Jun-Wen, YANG Ya-Li, SHI Chang-Chun, CHEN Zhu, LI Chun, WANG Yong-Ming, LI Lin-Bin, CHEN Jun-Hua

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Abstract

Objective To study the molecular epidemiological characteristics of the virus in children with acute viral diarrhea in Changdu of Tibet, China. Methods Fecal specimens were collected from 96 children with acute diarrhea who visited the People's Hospital of Changdu, Tibet, from November 2018 to November 2020 and were tested for adenovirus, norovirus, astrovirus, sapovirus, and rotavirus. Gene sequencing was performed for the genotypes of these viruses. Results The overall positive rate of the five viruses was 39% (37/96), among which astrovirus had the highest positive rate of 17%, followed by norovirus (9%), rotavirus (8%), adenovirus (7%), and sapovirus (5%). There was no significant difference in the positive rate of the five viruses among different age groups (P>0.05). Only the positive rate of astrovirus was significantly different among the four seasons (P<0.05). For adenovirus, 6 children had F41 type and 1 had C2 type; for norovirus, 6 had GⅠ.3 type, 1 had GⅠ.7 type, 1 had GⅡ.3 type, and 2 had GⅡ.4 Sydney_2012 type; HAstrV-1 type was observed in all children with astrovirus infection; for sapovirus, 1 child each had sporadic GⅠ.2, GⅠ.6, and GⅡ.1 sapovirus and 2 children had unknown type; 6 children had rotavirus G9[P8]. Conclusions Astrovirus and norovirus are important pathogens in children with acute diarrhea in Changdu, Tibet. The positive rate of adenovirus, norovirus, astrovirus, sapovirus, and rotavirus is not associated with age, and only the positive rate of astrovirus has obvious seasonality. F41 type is the dominant genotype of adenovirus; GⅠ.3 is the dominant genotype of norovirus; HAstrV-1 is the dominant genotype of astrovirus; sporadic GⅠ.2, GⅠ.6, and GⅡ.1 are the dominant genotypes of sapovirus; G9[P8] is the dominant genotype of rotavirus.

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Viral diarrhea / Molecular epidemiology / Genotype / Child

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MAO Jun-Wen, YANG Ya-Li, SHI Chang-Chun, CHEN Zhu, LI Chun, WANG Yong-Ming, LI Lin-Bin, CHEN Jun-Hua. Molecular epidemiological characteristics of the virus in 96 children with acute diarrhea in Changdu of Tibet, China[J]. Chinese Journal of Contemporary Pediatrics. 2022, 24(3): 266-272 https://doi.org/10.7499/j.issn.1008-8830.2110012

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