Molecular epidemiology of norovirus outbreaks in Argentina, 2013‐2018
Autor: | Jan Vinjé, Juan A. Stupka, Karina A. Gomes, Juan Ignacio Degiuseppe, Leslie Barclay, Veronica Costantini |
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Rok vydání: | 2020 |
Předmět: |
Genotype
viruses Argentina Biology medicine.disease_cause Article Disease Outbreaks 03 medical and health sciences fluids and secretions 0302 clinical medicine Age groups Virology medicine Humans 030212 general & internal medicine Typing Phylogeny Caliciviridae Infections Molecular Epidemiology Genetic diversity Molecular epidemiology Norovirus virus diseases Outbreak Acute gastroenteritis Gastroenteritis Infectious Diseases RNA Viral 030211 gastroenterology & hepatology |
Zdroj: | J Med Virol |
ISSN: | 1096-9071 0146-6615 |
Popis: | Noroviruses are a leading cause of endemic and epidemic acute gastroenteritis in all age groups. However, in Latin America, there are limited and updated data regarding circulating genotypes. The aim of this study was to assess the prevalence and genetic diversity of norovirus outbreaks in Argentina from 2013 to 2018. Stool samples from 29 acute gastroenteritis (AGE) outbreaks were available for viral testing. Norovirus was detected in samples from 18 (62.1%) outbreaks (2 GI and 16 GII). Both GI outbreaks were typed as GI.6[P11] whereas 10 different GII genotypes were detected, in which GII.4 viruses were the most frequently detected (29.4%, associated with GII.P31 and GII.P16) followed by GII.1[P33] and GII.6[P7] (17.6% each). Like GII.4 viruses, GII.2 viruses were also detected in association with different polymerases (GII.P2 and GII.P16). Our findings underscore the importance of dual RNA-dependent RNA polymerase-VP1 typing since recombinant strains with new polymerase sequences emerge frequently suggesting a possible role in improved fitness of these viruses. This study represents the most recent multi-year assessment of the molecular epidemiology of norovirus strains associated with AGE outbreaks in Argentina. Molecular surveillance of norovirus has to be considered to monitor possible changes in dominant genotypes which may assist to inform the formulation of future vaccines. |
Databáze: | OpenAIRE |
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