Abstract
The cross-sectional seroprevalence study of the peste des petits ruminants (PPR) in sheep and goats was carried out in the Southern Peninsular region of India to ascertain the prevalence of PPR virus (PPRV) antibodies at the epidemiological units (epi-units) level in the small ruminant population. The serum samples were collected from various epi-units (villages) in the different states and union territory (UT) in Southern Peninsular region using a stratified random sampling methodology from August 2017 to March 2018. A total of 6643 serum samples [sheep (n = 2785) and goats (n = 3858)] were collected from 360 epi-units and were screened by PPR competitive ELISA kit for the detection of PPRV antibodies. The results revealed that the seroprevalence of PPR in small ruminants in Telangana, Andhra Pradesh, Karnataka, Tamil Nadu, and Kerala states, and Puducherry UT was 87.0%, 66.4%, 64.3%, 47.8%, 11.4%, and 50.4%, respectively in the studied region. Further, the results of the chi-squared test revealed that the PPRV antibodies across different states and UT in the region were associated (sheep-χ2 = 218.8, p < 0.01; goats-χ2 = 827.1, p < 0.01), as all the states and UT adopted the PPR vaccination programme. The study also implies that the small ruminants in some of the epi-units (n = 102) had < 30% seroprevalence, which necessitates comprehensive intensive vaccination and active surveillance programmes to make this region as PPR free zone.
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Acknowledgements
The authors wish to thank the Indian Council of Agricultural Research (ICAR), New Delhi, India for providing facilities and financial support of the institute project (IXX14475) and the ICAR-NIVEDI staff for their constant support and encouragement always. The authors also thank the AICRP on ADMAS of Southern states and UT collaborating center of ICAR-NIVEDI, for sending the serum samples for regular surveys to monitor the status of livestock diseases in the country as well as for providing information about the status of PPR-CP for this study. The authors are thankful for all the Southern states and UT’s Animal Husbandry and Veterinary Services Departments and their officials, field veterinarians, para-veterinarians for their assistance during samples/data collection in the survey and their kind help and co-operation.
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The manuscript does not contain animal experimental trials. No ethical clearance is required for collecting small volumes of blood samples required for seroepidemiological studies, as per CPCSEA (Committee for the Purpose of Control and Supervision of Experiments on Animals) guidelines. Moreover, samples were collected by well-trained veterinarians concerning animal welfare regulations.
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District-wise details of the prevalence of PPRV antibodies in small ruminants in various states are given in Supplementary material (Tables S1, S2, S3, S4, S5, S6) for Telangana, Andhra Pradesh, Karnataka, Kerala, Tamil Nadu, and Puducherry respectively, in the studied region. (DOCX 42 kb)
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Balamurugan, V., Varghese, B., Muthuchelvan, D. et al. Towards eradication of peste des petits ruminants: post-vaccination evaluation in sheep and goats in Southern Peninsular India. VirusDis. 31, 539–548 (2020). https://doi.org/10.1007/s13337-020-00630-x
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DOI: https://doi.org/10.1007/s13337-020-00630-x