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The emergence of porcine circovirus 2 infections in the Northeastern part of India: A retrospective study from 2011 to 2017
Author(s) -
Barman Nagendra Nath,
Nath Barnali,
Kumar Vishnu,
Sen Arnab,
Dutta Tapan Kumar,
Dutta Biswajit,
Rahman Taibur,
Kumar Sachin
Publication year - 2018
Publication title -
transboundary and emerging diseases
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.392
H-Index - 63
eISSN - 1865-1682
pISSN - 1865-1674
DOI - 10.1111/tbed.12977
Subject(s) - seroprevalence , porcine circovirus , veterinary medicine , incidence (geometry) , population , biology , genotype , virology , antibody , serology , medicine , immunology , virus , environmental health , biochemistry , physics , gene , optics
Porcine circovirus ( PCV ) infection has emerged as an alarming threat to the pig population of India, especially in the Northeastern region ( NER ) over the last 10 years. The present study is a comprehensive report of the seroepidemiology of PCV 2 and its incidences in the pig population from organized and unorganized farms of the entire NER of India from 2011 to 2017. A total of 5697 serum samples were screened by ELISA and the mean positivity of PCV 2 antibodies in suspected sera was 31.27%. A total of 22 confirmed cases of PCV 2 infection were recorded during the years 2014–2017. Seroprevalence of PCV 2 infection in sows causing reproductive disorders in NER suggested its higher incidence in organized farms (65.7%) as compared to unorganized farms (17.6%). A detailed pathological and histopathological examination of the tissue samples collected from the affected animals indicated the presence of PCV 2. Molecular characterization and phylogenetic analysis of four PCV 2 isolates depicted the circulation of PCV 2d genotype in the states of Meghalaya and Assam.