Evidence map›Paper›PMID 32347531›Full record

ArticleBrazilian journal of microbiology : [publication of the Brazilian Society for Microbiology]2020

Retrospective study of porcine circovirus 3 (PCV3) in swine tissue from Brazil (1967-2018).

I L F Rodrigues, A C M Cruz, A E Souza, F B Knackfuss, C H C Costa, R L Silveira, T X Castro

Abstract read
In one paragraph

Article in Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology], 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed.

  1. Article
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  9. Detection and Complete Genomic Analysis ofPathogens (Basel, Switzerland) · 2023
    Article
  10. Article
  11. Porcine circovirus 3: a new challenge to explore.Frontiers in veterinary science · 2023
    Review
  12. Article
  13. Article
  14. Article
  15. Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

I L F RodriguesDepartment of Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Rua Prof. Hernani Melo, Niterói, Rio de Janeiro, 24210-130, Brazil. ingridlyrio@id.uff.br.
A C M CruzDepartment of Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Rua Prof. Hernani Melo, Niterói, Rio de Janeiro, 24210-130, Brazil.
A E SouzaDepartment of Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Rua Prof. Hernani Melo, Niterói, Rio de Janeiro, 24210-130, Brazil.
F B KnackfussEscola de Ciências da Saúde, Medicina Veterinária, Unigranrio, Duque de Caxias, RJ, Brazil.
C H C CostaPathological Anatomy Laboratory, State Center for Research in Animal Health, Agricultiural Research Company of the State of Rio de Janeiro-Pesagro-Rio, Alameda São Boaventura, Niterói, Rio de Janeiro, Brazil.
R L SilveiraDepartment of Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Rua Prof. Hernani Melo, Niterói, Rio de Janeiro, 24210-130, Brazil.
T X CastroDepartment of Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Rua Prof. Hernani Melo, Niterói, Rio de Janeiro, 24210-130, Brazil.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In this study, we report the molecular diagnosis and retrospective study of porcine circovirus 3 (PCV3) in frozen and formalin-fixed paraffin-embedded swine tissues (FFPE) collected from 1967 to 2018 in southeastern Brazil (Espírito Santo and Rio de Janeiro states). Frozen tissues from 35 pigs and FFPE tissues from 143 pigs were tested by nested PCR, targeting the PCV3 partial capsid gene. Bidirectional sequencing of 16 positive samples was performed, followed by sequence analysis and haplotype networks. A total of 26/178 samples (14.6%) tested positive for PCV3: 14/35 (40%) frozen tissue and 12/143 (8.4%) FFPE tissue. PCV3 was detected in the 1960s, 1970s, 2000s, and 2010s with the characterization of types PCV3a and PCV3b. A star-like distribution was observed in the grid of haplotypes, with a low haplotype diversity and more recent dispersal of the virus. A total of 40% of asymptomatic animals considered fit for slaughter tested positive for PCV3. In conclusion, PCV3 DNA was detected over 51 years of study, prior to initial reports and, so far, the sample detected in 1967 is the oldest partial capsid sequence described. The circulation of two different genotypes was reported, suggesting more than one introduction event of this virus into Brazil. Moreover, taken together, our studies indicated an ancient origin of PCV3 and its circulation in asymptomatic animals in Brazilian herds.

Indexed as

AnimalsBrazilCapsid ProteinsCircoviridae InfectionsCircovirusGenotypePhylogenyRetrospective StudiesSwineSwine DiseasesCapsid ProteinsFormalin-fixed paraffin-embedded tissuesHaplotype networkSequence analysis

Identifiers

PMID32347531
PMCPMC7455619

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.