Whole-genomic analysis of 12 porcine group A rotaviruses isolated from symptomatic piglets in Brazil during the years of 2012-2013

Author(s)

Silva, Fernanda D. F. ^[1] ; Espinoza, Luis R. L. ^[1] ; Tonietti, Paloma O. ^[1] ; Barbosa, Bruna R. P. ^[1] ; Gregori, Fabio ^[1]

Affiliation

^[1] Univ Sao Paulo, Dept Prevent Vet Med & Anim Hlth, Coll Vet Med, BR-05508270 Sao Paulo, SP - Brazil

• Document type: Journal article
• Source: INFECTION GENETICS AND EVOLUTION; v. 32, p. 239-254, JUN 2015.
• Web of Science Citations: 12

Abstract

Group A rotaviruses (RVAs) are leading causes of viral diarrhea in children and in the young of many animal species, particularly swine. In the current study, porcine RVAs were found in fecal specimens from symptomatic piglets on 4 farms in Brazil during the years of 2012-2013. Using RT-PCR, Sanger nucleotide sequencing, and phylogenetic analyses, the whole genomes of 12 Brazilian porcine RVA strains were analyzed. Specifically, the full-length open reading frame (ORF) sequences were determined for the NSP2-, NSP3-, and VP6-coding genes, and partial ORF sequences were determined for the VP1-, VP2-, VP3-, VP4-, VP7-, NSP1-, NSP4-, and NSP5/6-coding genes. The results indicate that all 12 strains had an overall porcine-RVA-like backbone with most segments being designated as genotype 1, with the exception of the VP6- and NSP1-coding genes, which were genotypes 15 and AS, respectively. These results add to our growing understanding of porcine RVA genetic diversity and will provide a platform for monitoring the role of animals as genetic reservoirs of emerging human RVAs strains. (C) 2015 Elsevier B.V. All rights reserved. (AU)

• FAPESP's process: 11/00870-0 - Multigenic analysis of porcine group A Rotavirus
• Grantee: Fábio Gregori
• Support Opportunities: Regular Research Grants