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Mem. Inst. Oswaldo Cruz ; 114: e180585, 2019. tab, graf
Artigo em Inglês | LILACS | ID: biblio-1040627

RESUMO

Hepatitis E virus (HEV), an emerging virus associated with acute hepatic disease, leads to thousands of deaths worldwide. HEV has already been reported in Brazil; however, there is a lack of epidemiological and molecular information on the genetic variability, taxonomy, and evolution of HEV. It is thus unclear whether hepatitis E is a neglected disease in Brazil or it has low relevance for public health in this country. Here, for the first time, we report the presence of HEV in Northeast Brazil. A total of 119 swine faecal samples were screened for the presence of HEV RNA using real-time polymerase chain reaction (RT-PCR) and further confirmed by conventional RT-PCR; among these, two samples were identified as positive. Molecular evolution analyses based on capsid sequences revealed that the samples had close proximities to HEV sequences belonging to genotype 3 and were genetically related to subtype 3f isolated in humans. Parsimony ancestral states analysis indicated gene flow events from HEV cross-species infection, suggesting an important role of pig hosts in viral spillover. HEV's ability for zoonotic transmission by inter-species host switching as well as its possible adaptation to new animal species remain important issues for human health.


Assuntos
Humanos , Animais , Zoonoses/virologia , Vírus da Hepatite E/isolamento & purificação , Vírus da Hepatite E/genética , Fezes/virologia , Filogenia , Suínos , Doenças dos Suínos/transmissão , Brasil , RNA Viral , Capsídeo/virologia , Hepatite E/virologia , Análise de Sequência de DNA , Reação em Cadeia da Polimerase em Tempo Real , Genótipo
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