Monitoring of Group C Rotavirus in Children With Acute Gastroenteritis in Brazil: An Emergent Epidemiological Issue After Rotavirus Vaccine?

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art_LUCHS_Monitoring_of_Group_C_Rotavirus_in_Children_With_2011.PDF (264.57 KB)
Citações na Scopus
13
Tipo de produção
article
Data de publicação
2011
DOI
Scopus
Web of Science
PubMed
Título da Revista
ISSN da Revista
Título do Volume
Editora
WILEY-BLACKWELL
Autores
LUCHS, Adriana
MORILLO, Simone Guadagnucci
TIMENETSKY, Maria do Carmo Sampaio Tavares
Citação
JOURNAL OF MEDICAL VIROLOGY, v.83, n.9, p.1631-1636, 2011
Projetos de Pesquisa
Unidades Organizacionais
Fascículo
Resumo
Group C rotavirus (GpCRV) has a worldwide distribution; however, its epidemiology and ecology are still unclear. Evidence for a possible zoonotic role has been postulated recently for Brazilian children strains. The aim of this study was to monitor GpCRV in children <= 15 years with acute gastroenteritis during the 2007-2010 national Brazilian rotavirus surveillance, and to undertake the molecular characterization of the major VP6 capsid protein. A total of 3,019 fecal samples were first screened for Group A rotavirus (GpARV). A total of 2,205 GpARV ELISA negative samples were tested further for the presence of GpCRV by SDS-PAGE, electronic microscopy, and RT-PCR for the VP6 gene. The genetic diversity of GpCRV was carried out by sequencing the VP6 gene. GpARV and GpCRV infections were detected in 24.6% (742/3,019) and 0.3% (8/3,019), respectively. The GpCRV detection rate increased from 0.2% (1/422) in 2007 to 1% (7/708) in 2008, and GpCRV cases were not detected in 2009 and 2010. The phylogenetic analysis indicated that the strains belonged to the human lineage, and showed a genetic relationship with the GpCRV strain from Japan isolated in 2009. None of the study sequences was related closely to animal GpCRV strains. This study provides further evidence that GpCRV is a minor cause of acute childhood gastroenteritis in Brazil, and does not suggest that GpCRV may assume epidemiological importance in the future, even after the introduction of a GpARV vaccine. In addition, the molecular analyses of the GpCRV samples in this study do not support the zoonotic hypothesis. J. Med. Virol. 83: 1631-1636, 2011. (C) 2011 Wiley-Liss, Inc.
Palavras-chave
rotavirus group C, Brazil, gastroenteritis, phylogenetic analysis, VP6 gene
URI
https://observatorio.fm.usp.br/handle/OPI/23555
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Coleções
Artigos e Materiais de Revistas Científicas - FM/Outros