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Copyright: The authors. This article is an open access article licensed under the terms of the Creative Commons Attribution License ( which permits unrestricted use, distribution and reproduction in any medium, provided the work is properly cited.

Research (Published online : 13-08-2013)

10. Molecular epidemiology of canine parvovirus in southern India - V. M. Vivek Srinivas, H. K. Mukhopadhyay, J. Thanislass, P. X. Antony and R. M. Pillai

Veterinary World, 6(10): 744-749

Aim: The present study was conducted to isolate and characterize canine parvovirus circulating in Southern India by genetic analysis of VP2 capsid protein gene.

Materials and Methods: In this study, 128 samples were collected from nine different locations covering five Southern Indian states (Pondicherry, Tamil Nadu, Kerala, Andhra Pradesh and Karnataka) . Out of 128 samples, 69 samples were found to be positive by PCR assay. Out of 69 positive samples, 36 were randomly selected and processed for virus isolation. Twenty viruses could be isolated successfully and 18 randomly selected isolate were subjected to VP2 gene sequence analysis along with 6 random clinical samples.

Result: Seventeen isolates and 5 clinical samples were characterized as New CPV-2a (CPV2a with 297-SerAla). But one isolate and one clinical sample had amino acids variations which were characteristics of New CPV-2b. The phylogenetic analysis revealed that one of the field isolates was found to be phylogenetically closely related to New CPV-2b strains of India; rest other sequences was found to share ancestral origins with New CPV-2a reference strains of Japan, China, Thailand and India.

Conclusion: The present study revealed that the predominant CPV strain circulating in Southern India is New CPV-2a. There is also enough indication of New CPV-2b strain from different states of Southern India.

Keywords: Canine parvovirus (CPV), crandell feline kidney (CRFK) cell line, molecular epidemiology, phylogenetic analysis, sequence analysis.


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