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Animals
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Frontiers in Porcine Circovirus 3 in the Swine Population
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Frontiers in Porcine Circovirus 3 in the Swine Population

A special issue of Animals (ISSN 2076-2615). This special issue belongs to the section "Pigs".

Deadline for manuscript submissions: closed (30 April 2022) | Viewed by 6858

Special Issue Editor

Dr. Francini Klaumann

E-Mail Website
Guest Editor
Departament de Medicina i Cirurgia Animals, Universitat Autònoma de Barcelona, Bellaterra, Spain
Interests: pcv-3; circovirus; molecular biology; swine diseases; animal health; pig production

Special Issue Information

Dear Colleagues,

Porcine circoviruses (PCVs) are small viral agents which infect members of the family Suidae. Until 2015, just two species of PCVs were known to be able to infect pigs: PCV-1, no pathogenic, and PCV-2, considered one of the most economically relevant pathogens for the swine industry. Thereafter, a new species was reported and named Porcine circovirus 3. Since its discovery, the virus has been widely found in different countries, indicating a widespread distribution. Retrospectively, the data indicate that PCV-3 has been circulating in the swine population for decades. Beyond that, the viral genome was found in samples from animals with several clinical syndromes or pathological conditions, as well as in healthier animals at a moderate to high range of detection. Meanwhile, the pathogenesis is still unclear.

This Special Issue is focused on obtaining original insight into the molecular epidemiology, immunology, diagnostic methods, data analysis techniques, and pathogenesis of PCV-3 infection in the swine population. It also aims to consolidate useful information to contribute to the advancement of the field.

Dr. Francini Klaumann
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Animals is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Porcine circovirus 3
  • Pathogen
  • Domestic pig
  • Wild boar
  • Swine population
  • Infection
  • Swine diseases
  • Circovirus
  • Pig production

Published Papers (2 papers)

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8 pages, 497 KiB  
Communication
Porcine Circovirus 3a Field Strains in Free-Living Wild Boars in Paraná State, Brazil
by Tatiana Carolina Gomes Dutra de Souza, Danielle Gava, Rejane Schaefer, Raquel Arruda Leme, Gisele da Silva Porto and Amauri Alcindo Alfieri
Animals 2021, 11(6), 1634; https://0-doi-org.brum.beds.ac.uk/10.3390/ani11061634 - 31 May 2021
Cited by 7 | Viewed by 3462
Abstract
Porcine circovirus 3 (PCV-3) was identified in domestic pigs worldwide. Although PCV-3 has also been detected in wild boars, information regarding its circulation in this free-living animal species is scarce. To investigate PCV-3 occurrence in free-living wild boars in Brazil, 70 serum samples [...] Read more.
Porcine circovirus 3 (PCV-3) was identified in domestic pigs worldwide. Although PCV-3 has also been detected in wild boars, information regarding its circulation in this free-living animal species is scarce. To investigate PCV-3 occurrence in free-living wild boars in Brazil, 70 serum samples collected between January 2017 and June 2019 in Paraná state, Brazil were analyzed by PCR assay. Amplicons measuring 330 bp in length were amplified in seven (10.0%) of the serum samples and confirmed to be PCV3-specific by nucleotide (nt) sequencing. As the amplified products from the serum samples yielded only intermediate levels of viral DNA, lung samples from the seven PCR-positive wild boars were also evaluated by PCR. Of these samples, five lung samples were positive and provided high levels of viral DNA. The three lung samples that presented the highest levels of viral DNA were selected for amplification and sequencing of the whole PCV-3 genome. The three full-length sequences obtained were grouped in PCV-3 clade “a”, and the sequences exhibited 100% nucleotide similarity among them. The PCV-3 field strains of this study showed nucleotide and amino acid similarities of 98.5–99.8% and 98.8–100%, respectively, with whole-genome PCV-3 sequences from around the world. Full article
(This article belongs to the Special Issue Frontiers in Porcine Circovirus 3 in the Swine Population)
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9 pages, 782 KiB  
Brief Report
Prevalence and Evolution Analysis of Porcine Circovirus 3 in China from 2018 to 2022
by Dengjin Chen, Yi Huang, Yating Guo, Lihong Wang, Yongning Zhang, Lei Zhou, Xinna Ge, Jun Han, Xin Guo and Hanchun Yang
Animals 2022, 12(12), 1588; https://0-doi-org.brum.beds.ac.uk/10.3390/ani12121588 - 20 Jun 2022
Cited by 4 | Viewed by 1709
Abstract
Porcine circovirus 3 (PCV3) is an emerging virus, causing substantial economic losses in pig populations, that was first detected in 2016. Furthermore, the virus has already been reported in Europe, the Americas, and Asia, including China, indicating that the virus has spread worldwide. [...] Read more.
Porcine circovirus 3 (PCV3) is an emerging virus, causing substantial economic losses in pig populations, that was first detected in 2016. Furthermore, the virus has already been reported in Europe, the Americas, and Asia, including China, indicating that the virus has spread worldwide. However, the molecular epidemiology of PCV3 still needs further study. To investigate PCV3 epidemiological characteristics in China, 2707 serum samples of pigs were randomly collected from 17 provinces in China between September 2018 and March 2022 and analyzed via PCR assays. The study showed that PCV3 infection was prevalent in the overall population with 31.07% (841/2707) and 100.0% (17/17) at sample and province levels, respectively, though the positivity rate of PCV3 varied from 7.41 to 70.0% in different provinces, suggesting that PCV3 infection has a widespread distribution in China. We selected 22 serum samples from different regions that had high levels of viral DNA for amplification and sequenced their ORF2 (Cap) gene. According to the phylogenetic analysis, all isolates in the current study could be grouped into two separate subclades, with 15 strains belonging to clade 3a and 7 strains belonging to clade 3b, indicating that PCV3a and PCV3b were the predominant subtypes in the regions of China studied. Meanwhile, additional analysis revealed that the capsid gene sequences identified in this study displayed 97.46~99.8% nucleotide (nt) and 97.06~100% amino acid (aa) sequence similarity with other PCV3 available reference strains, respectively. In general, our studies provide important insights for understanding the prevalence and evolution of PCV3 in China and will guide future efforts to develop measures for preventing and controlling the disease. Full article
(This article belongs to the Special Issue Frontiers in Porcine Circovirus 3 in the Swine Population)
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