Evidence map›Paper›PMID 32493465›Full record

ArticleParasites & vectors2020

Protist enteroparasites in wild boar (Sus scrofa ferus) and black Iberian pig (Sus scrofa domesticus) in southern Spain: a protective effect on hepatitis E acquisition?

Antonio Rivero-Juarez, Alejandro Dashti, Pedro López-López, Aly Salimo Muadica, Maria de Los Angeles Risalde, Pamela C Köster, Isabel Machuca, Begoña Bailo, Marta Hernández de Mingo, Elena Dacal and 7 more

Abstract read
In one paragraph

Article in Parasites & vectors, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 2 pooled it
–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, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Global prevalence ofParasitology · 2023
    Pooled it
  3. Article
  4. Article
  5. Article
  6. Article
  7. Occurrence and Molecular Characterization ofPathogens (Basel, Switzerland) · 2025
    Article
  8. Molecular detection of zoonoticalFrontiers in veterinary science · 2025
    Article
  9. Prevalence ofOne health (Amsterdam, Netherlands) · 2024
    Article
  10. Molecular Detection and Epidemiology of Potentially ZoonoticAnimals : an open access journal from MDPI · 2023
    Article
  11. Review
  12. Article
  13. Article
  14. Molecular Detection and Distribution ofTransboundary and emerging diseases · 2023
    Article
  15. International journal for parasitology. Parasites and wildlife · 2021
    Article
  16. Article
  17. Article
  18. Article
  19. Article
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

17 authors.

Antonio Rivero-JuarezInfectious Diseases Unit, Maimonides Institute for Biomedical Research (IMIBIC), University Hospital Reina Sofía, Córdoba, University of Córdoba, Córdoba, Spain.
Alejandro DashtiParasitology Reference and Research Laboratory, Spanish National Centre for Microbiology, Majadahonda, Madrid, Spain.
Pedro López-LópezInfectious Diseases Unit, Maimonides Institute for Biomedical Research (IMIBIC), University Hospital Reina Sofía, Córdoba, University of Córdoba, Córdoba, Spain.
Aly Salimo MuadicaParasitology Reference and Research Laboratory, Spanish National Centre for Microbiology, Majadahonda, Madrid, Spain.
Maria de Los Angeles RisaldeInfectious Diseases Unit, Maimonides Institute for Biomedical Research (IMIBIC), University Hospital Reina Sofía, Córdoba, University of Córdoba, Córdoba, Spain.
Pamela C KösterParasitology Reference and Research Laboratory, Spanish National Centre for Microbiology, Majadahonda, Madrid, Spain.
Isabel MachucaInfectious Diseases Unit, Maimonides Institute for Biomedical Research (IMIBIC), University Hospital Reina Sofía, Córdoba, University of Córdoba, Córdoba, Spain.
Begoña BailoParasitology Reference and Research Laboratory, Spanish National Centre for Microbiology, Majadahonda, Madrid, Spain.
Marta Hernández de MingoParasitology Reference and Research Laboratory, Spanish National Centre for Microbiology, Majadahonda, Madrid, Spain.
Elena DacalParasitology Reference and Research Laboratory, Spanish National Centre for Microbiology, Majadahonda, Madrid, Spain.
Ignacio García-BocanegraDepartment of Animal Health, Faculty of Veterinary, University of Córdoba-Agrifood Excellence International Campus (ceiA3), Córdoba, Spain.
José M SaugarParasitology Reference and Research Laboratory, Spanish National Centre for Microbiology, Majadahonda, Madrid, Spain.
Rafael Calero-BernalSALUVET, Department of Animal Health, Faculty of Veterinary, Complutense University of Madrid, Madrid, Spain.
David González-BarrioParasitology Reference and Research Laboratory, Spanish National Centre for Microbiology, Majadahonda, Madrid, Spain.
Antonio RiveroInfectious Diseases Unit, Maimonides Institute for Biomedical Research (IMIBIC), University Hospital Reina Sofía, Córdoba, University of Córdoba, Córdoba, Spain.
Verónica BrizViral Hepatitis Reference and Research Laboratory, Spanish National Centre for Microbiology, Majadahonda, Madrid, Spain. veronica.briz@isciii.es.
David CarmenaParasitology Reference and Research Laboratory, Spanish National Centre for Microbiology, Majadahonda, Madrid, Spain. dacarmena@isciii.es.ORCID http://orcid.org/0000-0002-4015-8553

Funding

Instituto de Salud Carlos III PI16CIII/00024
6 · The paper itself

Abstract

backgroundSeveral studies have independently evaluated the occurrence of hepatitis E virus (HEV) and enteroparasites in swine, but no surveys have been conducted to jointly assess the prevalence and genetic diversity of enteroparasites in pigs and wild boars, their sympatric transmission between hosts, and their potential interaction with HEV.

methodsWe prospectively collected serum and faecal samples from black Iberian domestic pigs and wild boars from southern Spain between 2015‒2016. We evaluated for HEV in serum and faeces, and for the presence of enteroparasites (Giardia duodenalis, Cryptosporidium spp., Blastocystis sp., Neobalantidium coli and Strongyloides spp.) in the same faecal samples. The prevalence of each intestinal parasite species was calculated.

resultsA total of 328 animals (56.7% black Iberian pigs and 43.3% wild boars) were included in the study. The overall global prevalence of HEV in serum was 16.8%. The overall global prevalence of each enteroparasite species was 19.5% for G. duodenalis, 8.2% for Cryptosporidium spp., 41.8% for Blastocystis sp., 31.4% for N. coli, and 8.8% for Strongyloides spp. HEV-infected animals showed a significantly lower prevalence of G. duodenalis (3.2 vs 20%; P = 0.002) and Blastocystis sp. (38.7 vs 80%; P < 0.001) than those uninfected by HEV. Animals carrying G. duodenalis and Blastocystis sp. infections showed a significantly lower rate of HEV infection than those not harbouring these enteroparasites (P < 0.001).

conclusionsOur study found a high prevalence of enteroparasites in black Iberian pigs and wild boars in southern Spain, suggesting a sympatric co-transmission of some of the species investigated. It is suggested that extracellular G. duodenalis and Blastocystis sp. might have a protective effect on HEV acquisition in swine.

Indexed as

AnimalsFecesFemaleGastrointestinal TractHepatitis EHepatitis E virusMaleParasitesPrevalenceProspective StudiesRetrospective StudiesSpainSus scrofaSwineSwine DiseasesBlastocystisCo-infectionCryptosporidiumEnteric parasitesGiardiaHepatitis E virusPigsSpainStrongyloidesTransmissionWild boars

Identifiers

PMID32493465
PMCPMC7271453

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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.