J Vet Sci.
2021 May;22(3):e29. 10.4142/jvs.2021.22.e29.
Serological evidence of West Nile viral infection in archived swine serum samples from Peninsular Malaysia
- Affiliations
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- 1Department of Veterinary Laboratory Diagnosis, Faculty of Veterinary Medicine, Universiti Putra Malaysia, UPM Serdang, Selangor 43400, Malaysia
- 2Department of Farm and Exotic Animal Medicine and Surgery, Faculty of Veterinary Medicine, Universiti Putra Malaysia, UPM Serdang, Selangor 43400, Malaysia
- 3Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, UPM Serdang, Selangor 43400, Malaysia
- 4Laboratory of Vaccines and Biomolecules, Institute of Bioscience, Universiti Putra Malaysia, UPM Serdang, Selangor 43400, Malaysia
- 5Department of Animal Production, Federal University of Technology Minna, PMB 65, Minna, Niger, Nigeria
- 6Department of Veterinary Microbiology, Faculty of Veterinary Medicine, Bayero University, PMB 3011, Kano, Nigeria
- 7Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
- KMID: 2516204
- DOI: http://doi.org/10.4142/jvs.2021.22.e29
Abstract
- West Nile virus (WNV), a neurotropic arbovirus, has been detected in mosquitos, birds, wildlife, horses, and humans in Malaysia, but limited information is available on WNV infection in Malaysian pigs. We tested 80 archived swine serum samples for the presence of WNV antibody and West Nile (WN) viral RNA using ID Screen West Nile Competition Multi-species enzymelinked immunosorbent assay kits and WNV-specific primers in reverse transcription polymerase chain reaction assays, respectively. A WNV seroprevalence of 62.5% (50/80) at 95% confidence interval (51.6%–72.3%) was recorded, with a significantly higher seroprevalence among young pigs (weaner and grower) and pigs from south Malaysia. One sample was positive for Japanese encephalitis virus antibodies; WN viral RNA was not detected in any of the serum samples.
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