Frequency of porcine circovirus 3 detection and histologic lesions in clinical samples from swine in the United States

Zhen Yang, Douglas G. Marthaler, Albert Rovira

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Porcine circovirus 3 (PCV3) is widespread in pigs worldwide. Diverse clinical signs and lesions have been associated with PCV3, but the role of PCV3 as a cause of disease in swine remains unclear. We investigated the association of PCV3 with clinical signs and histologic lesions in 730 diagnostic swine cases between February 2016 and January 2018. The cases contained 2,177 samples submitted from 474 sites located in 21 states in the United States. PCR assay results were positive for PCV3 for 577 of 2,177 (27%) samples, 255 of 730 (35%) cases, 181 of 474 (38%) sites, and 17 of 21 (81%) states. We detected PCV3 in 19 of 28 specimen types and in pigs of all ages and clinical presentations, including healthy pigs, with the highest detection rate in adult pigs. PCV3 detection was not associated with respiratory, gastrointestinal, or CNS signs, weight loss, or sudden death. Of 58 types of histologic lesions evaluated, PCV3 detection was associated with myocarditis, cardiac vasculitis, and interstitial pneumonia in growing pigs. A high PCV3 detection rate was observed in aborted fetuses.

Original languageEnglish (US)
Pages (from-to)602-611
Number of pages10
JournalJournal of Veterinary Diagnostic Investigation
Volume34
Issue number4
DOIs
StatePublished - Jul 2022

Bibliographical note

Funding Information:
Our study was funded by the Swine Health Information Center grant 18-201, Summer Scholar Programs of College of Veterinary Medicine at the University of Minnesota, US-China Joint DVM scholarship program, and the Chinese Scholarship Council.

Publisher Copyright:
© 2022 The Author(s).

Keywords

  • clinical signs
  • frequency
  • histologic lesions
  • pigs
  • porcine circovirus 3
  • reproductive disease

PubMed: MeSH publication types

  • Journal Article

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