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Rotaviruses A (RVA) are leading causes of diarrhea and dehydration in piglets and imply great economic loss to the pig farming community. In this study, the porcine RVA genotypes circulating in western and northern parts of India were determined by screening 214 fecal samples from diarrheic ( n  = 144) and non-diarrheic ( n  = 70) pigs. Subsequently, the structural (VP4 and VP7) and nonstructural (NSP3, and NSP4) genes were amplified, sequenced, and genetically characterized. The RVA positivity percentage was 7.94% (17/214) by RNA-PAGE and 10.28% (22/214) by RT-PCR. Higher RVA positivity was observed in samples from Uttar Pradesh (24.07%) followed by Maharashtra (6.77%) and Goa (2.38%). The sequence and automated genotyping software analysis confirmed the circulation of G4P[6] and G9P[13] RVA strains in porcine population. To note, the sequence similarity of the VP7 gene of Porcine/INDIA/RVA/PK-13 IVRI/Maharashtra/G4 and Porcine/INDIA/RVA/P-8/IVRI/U.P./G9 strain showed a relationship of 96.83 and 98.89% at the nucleotide level with human RVA strains indicating inter-species transmission. Additionally, the NSP3 (T1) and NSP4 (E1) genes (genotypes) also showed genetic relatedness with human RVA strains. Overall, the nucleotide sequences of VP7, NSP3, and NSP4 genes of porcine RVA indicate zooanthroponotic transmission. Further, we report the detection of G9P[13] RVA strain in porcine for the first time from India.HIGHLIGHTSRVA positivity was 7.94% (17/214) by RNA-PAGE and 10.28% (22/214) by RT-PCRThe RVA strain G9P[13] reported for the first time in Indian pigletsVP7, NSP3 and NSP4 genes analysis of porcine RVA showed genetic relatedness with human strains indicating evidence of zooanthroponotic transmission RVA positivity was 7.94% (17/214) by RNA-PAGE and 10.28% (22/214) by RT-PCR The RVA strain G9P[13] reported for the first time in Indian piglets VP7, NSP3 and NSP4 genes analysis of porcine RVA showed genetic relatedness with human strains indicating evidence of zooanthroponotic transmission

Molecular characterization of porcine rotavirus A from India revealing zooanthroponotic transmission