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. 2017 Jun 29;12(6):e0179839.
doi: 10.1371/journal.pone.0179839. eCollection 2017.

High prevalence of GII norovirus in hospitalized children with acute diarrhea, in Beijing

Liping Jia  1 , You Zhang  1 , Liying Liu  1 , Huijin Dong  1 , Linqing Zhao  1 , Yuan Qian  1
Affiliations

High prevalence of GII norovirus in hospitalized children with acute diarrhea, in Beijing

Liping Jia et al. PLoS One. .

Abstract

This study was addressed to the relationship between norovirus and acute diarrhea in hospitalized children, including hospital-acquired infection (HAI) and community-acquired infection (CAI) in a children's hospital in Beijing. RT-PCR was used to detect norovirus in stool specimen, followed by sequence analysis for PCR products. From 2010 to 2013, a total of 1248 specimens, including 661 from the HAI group and 587 from the CAI group were tested for norovirus. Norovirus were detected in 380 of 1248 (30.4%) diarrheal specimens. The positive rate for norovirus detection was higher in children within HAI group than CAI group (35.3%, 232/661 vs. 25.6%, 148/587), and the difference was significant (X2 = 14.35, P<0.05). For age distribution, the highest positivity rates of norovirus were in age of 0-5 months for HAI group and 12-23 months for CAI group. In the study, 262 amplicons of the VP1 region from norovirus-positive specimens were sequenced, which showed GII.3 and GII.4 norovirus were the most common genotypes detected in 50.0% (n = 131) and 48.9% (n = 128) of the positive specimens, respectively. Regarding the wards distribution, GII.3 norovirus was mainly detected in ward for neonatal diseases (36/85 in HAI group; 19/46 in CAI group), GII.4 norovirus was mainly detected in ward for respiratory and digestive diseases (21/85 in HAI group; 15/33 in CAI group).

Conclusion: The data elaborated the importance of norovirus in hospital associated infectious diarrhea. The prevalence of norovirus is higher from HAI group than CAI group, and the norovirus from the patients in CAI group could be the source of infection in HAI group.

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Conflict of interest statement

Competing Interests: The authors have declared that no competing interests exist.

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