Detection and Genomic Characterization of Senecavirus from Indian Pigs

Abstract

Background: Senecavirus A (SVA), is a positive sense small non-enveloped RNA virus which belongs to Picornaviridae family and is responsible for porcine vesicular disease. The disease has been reported in many countries since late 2014, 2015 and 2016 like USA, Canada, Brazil, China and Thailand. Methods: In this study, the metagenomic study was performed on faecal samples of pigs/piglets suffering from diarrhea in Haryana, India with the help of next generation sequencing. The cDNA library was prepared from the faecal samples and run on the Illumina MiSeq instrument followed by identification and genomic characterization. Result: This study revealed the presence of SVA in the samples. The characterization of complete genome sequence of this strain showed complete nucleotide identity (100%) with SVA genomes reported from Canada, however, the polyprotein shares 98-99% amino acid sequence similarity with the genomes currently available in the GenBank. To the best of our knowledge this is the first report of SVA infection in pigs/piglets of Haryana, India. It demonstrates that an active and urgent surveillance of the swine population is required in the region. Additionally, the veterinarians must pay immediate attention to this vesicular disease and adopt preventive measures for its control.