Role of Noroviruses in Sporadic Acute Gastroenteritis Cases from Children Attending a Large Referral Children's Hospital in Buenos Aires City, Argentina.
Journal
The Pediatric infectious disease journal
ISSN: 1532-0987
Titre abrégé: Pediatr Infect Dis J
Pays: United States
ID NLM: 8701858
Informations de publication
Date de publication:
01 02 2023
01 02 2023
Historique:
entrez:
13
1
2023
pubmed:
14
1
2023
medline:
18
1
2023
Statut:
ppublish
Résumé
Noroviruses (NVs) are recognized as the leading cause of sporadic and epidemic acute gastroenteritis worldwide, in all age groups. Although there is increasing knowledge that NVs are responsible for many acute gastroenteritis outbreaks in Argentina, studies to estimate prevalence in sporadic cases are scarce. A descriptive, observational and cross-sectional study was conducted with children under 5 years with acute gastroenteritis attending the outpatient department at the "Ricardo Gutiérrez" Children's Hospital (RGCH) in Buenos Aires City between June 2017 and June 2021. Sociodemographic, clinical and epidemiologic data were recorded. Stool samples were tested and genotyped for norovirus. Association between norovirus detection and demographic and clinical variables was assessed. A total of 350 children with acute diarrhea were included, of which stool samples were collected for 332 (94.9%). Norovirus was detected in 81 cases (24.4%). Vomiting and moderate/severe diarrhea were more frequent in norovirus-positive than norovirus-negative children. However, the presence of watery diarrhea and a history of rotavirus vaccination were significantly associated with norovirus etiology. GII and GII.4 were the most frequently detected genogroup and genotype, respectively. NVs were detected with high frequency, mostly in children between 6 months and 2 years old, reinforcing the hypothesis of a newly updated scenario of norovirus predominance over rotavirus. Watery diarrhea, complete vaccination against rotavirus and vomiting are 3 key parameters that should raise suspicion of possible norovirus gastroenteritis. Continuous and active norovirus surveillance in this age group is important because children represent a priority group for norovirus vaccine design and development.
Sections du résumé
BACKGROUND
Noroviruses (NVs) are recognized as the leading cause of sporadic and epidemic acute gastroenteritis worldwide, in all age groups. Although there is increasing knowledge that NVs are responsible for many acute gastroenteritis outbreaks in Argentina, studies to estimate prevalence in sporadic cases are scarce.
METHODS
A descriptive, observational and cross-sectional study was conducted with children under 5 years with acute gastroenteritis attending the outpatient department at the "Ricardo Gutiérrez" Children's Hospital (RGCH) in Buenos Aires City between June 2017 and June 2021. Sociodemographic, clinical and epidemiologic data were recorded. Stool samples were tested and genotyped for norovirus. Association between norovirus detection and demographic and clinical variables was assessed.
RESULTS
A total of 350 children with acute diarrhea were included, of which stool samples were collected for 332 (94.9%). Norovirus was detected in 81 cases (24.4%). Vomiting and moderate/severe diarrhea were more frequent in norovirus-positive than norovirus-negative children. However, the presence of watery diarrhea and a history of rotavirus vaccination were significantly associated with norovirus etiology. GII and GII.4 were the most frequently detected genogroup and genotype, respectively.
CONCLUSIONS
NVs were detected with high frequency, mostly in children between 6 months and 2 years old, reinforcing the hypothesis of a newly updated scenario of norovirus predominance over rotavirus. Watery diarrhea, complete vaccination against rotavirus and vomiting are 3 key parameters that should raise suspicion of possible norovirus gastroenteritis. Continuous and active norovirus surveillance in this age group is important because children represent a priority group for norovirus vaccine design and development.
Identifiants
pubmed: 36638391
doi: 10.1097/INF.0000000000003775
pii: 00006454-202302000-00002
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
94-98Informations de copyright
Copyright © 2022 Wolters Kluwer Health, Inc. All rights reserved.
Déclaration de conflit d'intérêts
The authors have no conflicts of interest to disclose.
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