Abstract
It is suggested that bovine enteroviruses (BEV) are involved in the aetiology of enteric infections, respiratory disease, reproductive disorders and infertility. In this study, bovine faecal samples collected in different Brazilian states were subjected to RNA extraction, reverse transcription-polymerase chain reaction analysis and partial sequencing of the 5'-terminal portion of BEV. One hundred and three samples were tested with an overall positivity of 14.5%. Phylogenetic analysis clustered these BEV Brazilian samples into the Enterovirus F clade. Our results bring an important update of the virus presence in Brazil and contribute to a better understanding of the distribution and characterisation of BEV in cattle.
Highlights
Viruses of the Picornaviridae family of which enteroviruses (EVs) belong are non-enveloped and icosahedral viruses, measure 30–32 nm in diameter and present positive-sense, nonsegmented RNA genome ranging in size from 6.7 to 10.1 kb containing a single long open reading frame
The known bovine enteroviruses (BEV) belong to the species EV-E and -F; EV-E is subgrouped into four types and EV-F into six types
This work described the detection of BEV in two different Brazilian states (São Paulo and Pernambuco) through serological screening [9]
Summary
Viruses of the Picornaviridae family of which enteroviruses (EVs) belong are non-enveloped and icosahedral viruses, measure 30–32 nm in diameter and present positive-sense, nonsegmented RNA genome ranging in size from 6.7 to 10.1 kb containing a single long open reading frame. EVs have been isolated from cattle with a wide range of clinical signs including enteric infections (high morbidity, diarrhoea and moderate mortality), respiratory disease (cough, fever and dyspnoea), reproductive disorders and infertility [5, 6]. This work described the detection of BEV in two different Brazilian states (São Paulo and Pernambuco) through serological screening [9].
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