Article history: Received: 18-11-2017, Accepted: 18-01-2018, Published online: 13-03-2018
Corresponding author: S. S. Patil
E-mail: email@example.comCitation: Patil SS, Suresh KP, Saha S, Prajapati A, Hemadri D, Roy P (2018) Meta-analysis of classical swine fever prevalence in pigs in India: A 5-year study, Veterinary World, 11(3): 297-303.
Aim: The aim of the study was to determine the overall prevalence of classical swine fever (CSF) in pigs in India, through a systematic review and meta-analysis of published data.
Materials and Methods: Consortium for e-Resources in Agriculture, India, Google Scholar, PubMed, annual reports of All India Coordinated Research Project on Animal Disease Monitoring and Surveillance,and All India Animal Disease database of NIVEDI (NADRES) were used for searching and retrieval of CSF prevalence data (seroprevalence, virus antigen, and virus nucleic acid detection) in India using a search strategy combining keywords and related database-specific subject terms from January 2011 to December 2015 in English only.
Results: A total of 22 data reports containing 6,158 samples size from 18 states of India were used for the quantitative synthesis, and overall 37% (95% confidence interval [CI]=0.24, 0.51) CSF prevalence in India was estimated. The data were classified into 4 different geographical zones of the country: 20% (95% CI=0.05, 0.55), 31% (95% CI=0.18, 0.47), 55% (95% CI=0.32, 0.76), and 34% (95% CI=0.14, 0.62). CSF prevalence was estimated in northern, eastern, western, and southern regions, respectively.
Conclusion: This study indicates that overall prevalence of CSF in India is much lower than individual published reports.
Keywords: Classical swine fever, India, meta-analysis, pigs, prevalence.
2. Shivaraj, D.B., Patil, S.S and Rathnamma, D. (2013) An insight into classical swine fever. Indian Farm., 63: 23-26.
3. Francki, R.I.B., Fauquet, C.M., Knudson, D.L. and Brown, F. (1991) Descriptions of virus families and groups. In: Classification and Nomenclature of Viruses. Springer, Vienna. p223-233. [Crossref]
4. Shivaraj, D., Patil, S.S, Rathnamma, D., Sharada, S. and Desai, G.S. (2013) Molecular mechanism involved in the pathogenesis of classical swine fever. Indian J. Comp. Microbiol. Immunol. Infect. Dis., 34: 1-9.
5. Sarma, D.K., Krishna, L. and Mishri, J. (2008) Classical swine fever in pigs and its status in India: A review. Indian J. Anim. Sci., 78: 1311-1317.
6. Nandi, S., Muthuchelvan, D., Ahuja, A., Bisht, S., Chander, V., Pandey, A.B. and Singh, R.K. (2011) Prevalence of classical swine fever virus in India: A 6-year study (2004-2010). Transbound. Emerg. Dis., 58: 461-463. [Crossref] [PubMed]
7. Krishnamurty, D. (1964) Paper Presented at the 11th Conference on Animal Diseases, Madras.
8. NADRES. O. (2017) Animal Disease Database of National Animal Disease Referral Expert System. Indian Council of Agriculture System-National Institute of Veterinary Epidemiology and Disease Informatics, Bengaluru.
9. Singh, B., Bardhan, D., Verma, M.R., Prasad, S., Sinha, D.K. and Sharma, V.B. (2016) Incidence of Classical swine fever in pig in India and its economic valuation with a simple mathematical model. Anim. Sci. Rep., 10: 3-9.
11. Malmarugan, S., Sundaram, A.M. and Rajeswar, J.J. (2014) An outbreak of classical swine fever in indigenous pigs in Tamil Nadu, India. Int. J. Adv. Vet. Sci. Technol., 3: 145-148. [Crossref]
12. Shivaraj, D.B., Patil, S.S., Rathnamma, D., Veeregowda, B.M., Hemadri, D., Geetha, S., Reddy, G.B.M., Sharada, R. and Rahman, H. (2013) Seroprevalence of classical swine fever in Karnataka. Indian J. Field. Vet., 9: 26-29.
13. Patil, S.S., Hemadri, D., Veeresh, H., Sreekala, K., Gajendragad, M. and Prabhudas, K. (2012) Phylogenetic analysis of NS5B gene of classical swine fever virus isolates indicates plausible Chinese origin of Indian subgroup 2.2 viruses. Virus Genes, 44: 104-08. [Crossref] [PubMed]
14. Shivaraj, D.B., Patil, S.S., Ratnamma, D., Hemadri, D., Geetha, S., Narayanaswamy, H.D., Reddy, M., Sharada, R., Aralikatti, S.S. and Rahman, H. (2013) Early detection of classical swine fever virus in blood samples of pigs in Karnataka. Indian J. Comp. Microbiol. Immunol. Infect. Dis., 34: 18-23.
15. Rajbongshi, G., Barman, N. N., Khatoon, E., Baruah, K., Deka, N., Das, S. K., and Hazarika, R. A. (2015) Comparative evaluation of single step real-time RT-PCR and gel based RT-PCR assay for detection of classical swine fever. . Indian J. Anim. Sci., 85: 19-22.
16. Ahuja, A., Mukharjee, P., Bhattacharjee, U., Chakraborty, A.K., Karam, A., Ghatak, S., Puro, K., Das, S., Shakuntala, I., Srivastava, N. and Sen, A. (2014) Classical swine fever virus infection in India: Seroprevalence study from north-eastern states of India. Indian J. Hill. Farming., 27: 1-3.
17. Choori, P., Patil, S.S., Rathnamma, D., Sharada, R., Chandranaik, B.M., Isloor, S., Geetha, S. and Rahman, H. (2014) Marker vaccines against classical swine fever-A review. Immunol. Infect. Dis., 35: 1-8.
18. Shivaraj, D., Patil, S.S., Rathnamma, D., Hemadri, D., Isloor, S., Geetha, S., Reddy, G.B.M., Sharada, R. and Rahman, H. (2014) Phylogenetic analysis of recent classical swine fever isolates from Karnataka, India. Indian J. Anim. Sci., 84: 236-239.
19. Deori, L., Rahman, T. and Barman, N.N. (2012) Sero-prevalence and pathology of classical swine fever (CSF) in pigs in certain districts of Assam. Indian J. Vet. Pathol., 36: 143-147.
20. Choori, P., Patil, S.S., Rathnamma, D., Sharada, R., Chandranaik, B.M., Isloor, S., Manjunathareddy, G.B., Geetha, S. and Rahman, H. (2015) Prevalence of classical swine fever in Karnataka, India. Vet. World, 8: 541-44. [Crossref] [PubMed] [PMC]
21. Annual Reports of All India Coordinated Research Project on Animal Disease Monitoring and Surveillance (AICRP on ADMAS) (2011-2015), Bengaluru, Karnataka.
22. Patil, S.S., Hemadri, D., Shankar, B.P., Raghavendra, A.G., Veeresh, H., Sindhoora, B., Chandan, S., Sreekala, K., Gajendragad, M.R. and Prabhudas, K. (2010) Genetic typing of classical swine fever isolates from India. Vet. Microbiol., 141: 367-373. [Crossref] [PubMed]
23. Rajbongshi, G., Barman, N.N., Khatoon, E. and Hazarika, R.A. (2015) Comparative evaluation of single step real-time RT-PCR and gel based RT-PCR assay for detection of classical swine fever. Indian J. Anim. Sci., 85: 1299-1302.
24. Shivaraj, D.B., Patil, S.S., Rathnamma, D., Hemadri, D., Isloor, S., Geetha, S., Manjunathareddy, G.B.M., Gajendragad, M.R. and Rahman, H. (2015) Genetic clustering of recent classical swine fever virus isolates from Karnataka, India revealed the emergence of subtype 2.2 replacing subtype 1.1. Virus Dis., 26: 170-179. [Crossref]
26. George, S., Rajbongshi, G., Deuri, S., Khatoon, A., & Barman, N. N. (2012) Simultaneous occurrence of pneumonic pasteurellosis and swine fever in an organised pig farm in Assam. North-East Veterinarian., 12:5-8.
27. Ding, H., Gao, Y.M., Deng, Y., Lamberton, P.H.L. and Lu, D.B. (2017) A systematic review and meta-analysis of the seroprevalence of Toxoplasma gondii in cats in mainland China. Parasit. Vectors, 10: 27-39. [Crossref] [PubMed] [PMC]
28. Bian, C.R., Lu, D.B., Su, J., Zhou, X. and Zhuge, H. (2015) Serological prevalence of Schistosoma japonicumin mobile populations in previously endemic but now non-endemic regions of china: A systematic review and meta-analysis. PLoS One, 10: 1-21. [Crossref] [PubMed] [PMC]
29. Xu, Y.Y. (1994) Common data types and statistical analysis methods in meta-analysis. Chin. J. Prev. Med., 28: 303-307.
30. Borenstein, M., Hedges, L.V., Higgins, J.P.T. and Rothstein, H.R. (2009) Introduction to Meta-Analysis. John Wiley & Sons, Ltd., New York, USA. p77-85. [Crossref]
31. Raut, S.D., Rajak, K.K., Kumar, R., Gurav, A.R., Manu, M., Dhanesh, V.V., Muthuchelvan, D., Dhar, P. and Pandey, A.B. (2015) Detection of classical swine fever virus antigen and nucleic acid on blood of experimentally infected piglets. Adv. Anim. Vet. Sci., 3: 1-6. [Crossref]32. Livestock Census-2012 Report. (2014) 19th All India Report, Ministry of Agriculture, Department of Animal Husbandry, Dairying and Fisheries Krishi Bhawan, New Delhi.