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Seroprevalence of economically important viral pathogens in swine populations of Trinidad and Tobago, West Indies

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The objective of this study was to evaluate the seroprevalence and identify the strains of swine influenza virus (SwIV), as well as the seroprevalence of porcine parvovirus (PPV), transmissible gastroenteritis virus (TGEV), porcine reproductive and respiratory syndrome virus (PRRSV), porcine respiratory coronavirus (PRCV), porcine circovirus type 2 (PCV-2), and classical swine fever virus (CSFV) in pigs in Trinidad and Tobago (T&T). Blood samples (309) were randomly collected from pigs at farms throughout T&T. Serum samples were tested for the presence of antibodies to the aforementioned viruses using commercial ELISA kits, and the circulating strains of SwIV were identified by the hemagglutination inhibition test (HIT). Antibodies against SwIV were detected in 114 out of the 309 samples (37%). Out of a total of 26 farms, 14 tested positive for SwIV antibodies. HI testing revealed high titers against the A/sw/Minnesota/593/99 H3N2 strain and the pH1N1 2009 pandemic strain. Antibodies against PPV were detected in 87 out of the 309 samples (28%), with 11 out of 26 farms testing positive for PPV antibodies. Antibodies against PCV-2 were detected in 205 out of the 309 samples tested (66%), with 25 out of the 26 farms testing positive for PCV-2 antibodies. No antibodies were detected in any of the tested pigs to PRRSV, TGEV, PRCV, or CSFV.

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We thank the pig farmers of Trinidad and Tobago for providing access to their pigs for sampling. We are grateful to the academic and technical staff of the UWI School of Veterinary Medicine especially Mr. Roger Malcolm and Dr. Marc Driscoll who were particularly instrumental in the sampling collection stages. We owe our gratitude to the Director of Veterinary Public Health, Dr. Saed Rahaman, and the Livestock and Livestock Products Board of Trinidad and Tobago. We also thank the UWI Trinidad and Tobago Research and Development Impact Fund (RDI Fund) for funding the study. We thank Natalie McGinn at the Animal and Plant Health Agency—Weybridge for technical support.

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Correspondence to Jamie R. V. Sookhoo.

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The authors declare that they have no competing interests.

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All procedures performed in studies involving animals were in accordance with the ethical standards of the University of the West Indies (UWI) Research and Development Impact Fund and the UWI Ethics Committee.

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Sookhoo, J.R.V., Brown-Jordan, A., Blake, L. et al. Seroprevalence of economically important viral pathogens in swine populations of Trinidad and Tobago, West Indies. Trop Anim Health Prod 49, 1117–1124 (2017). https://doi.org/10.1007/s11250-017-1299-3

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  • Seroprevalence
  • Trinidad and Tobago
  • Porcine parvovirus
  • Porcine circovirus type 2
  • Swine influenza A virus