Molecular Typing of Canine parvovirus Occurring in Pondicherry by Multiplex PCR and PCR–RFLP

摘要

The present study was aimed at molecular typing of Canine parvovirus (CPV) occurring in Pondicherry using PCR based assays. CPV-2a and CPV-2b types were detected by PCR in 68 (53.12%) out of 128 faecal samples/rectal swabs. All the 68 samples found positive by PCR assay were subjected to multiplex PCR assay with CPV-2ab and CPV-2b primer pairs. Sixty-seven (98.52%) samples were characterized as CPV-2b type and one sample (1.47%) was categorized as CPV-2a type. Sixty clinical samples found negative by CPV-2ab primers were subjected to another PCR assay with CPV-555 primer pair for detecting CPV-2c. Though three samples (5%) responded to this PCR, subsequent RFLP of these PCR products with MboII did not show any cleavage indicating the absence of CPV-2c in Pondicherry. It was inferred that CPV-2b was the most prevalent CPV type in Pondicherry. It was further concluded that the CPV-2 variants (CPV-2a, CPV-2b and CPV-2c) currently circulating in the field worldwide could be diagnosed by employing multiplex PCR and PCR–RFLP assays.