Evidence map›Paper›PMID 26619187›Full record

ArticlePloS one2015

Prevalence of Chlamydial Infections in Fattening Pigs and Their Influencing Factors.

Karolin Hoffmann, Franziska Schott, Manuela Donati, Antonietta Di Francesco, Michael Hässig, Sabrina Wanninger, Xaver Sidler, Nicole Borel

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed, 1 pooled it
4.6field-weighted citation impact, top 5% of its field
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

35 citing papers in PubMed, 1 synthesis or guideline pooled it, 56 citations in OpenAlex.

  1. Current status and future directions ofFrontiers in veterinary science · 2026
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  10. Frontiers in cell and developmental biology · 2024
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  11. Microbiology spectrum · 2023
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  15. Characteristics ofPathogens (Basel, Switzerland) · 2021
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  16. Occurrence ofPathogens (Basel, Switzerland) · 2021
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  17. Article
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  20. Detection ofJournal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc · 2020
    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

8 authors at 2 institutions in 2 countries.

Karolin HoffmannInstitute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland.
Franziska SchottDepartment of Farm Animals, Division of Swine Medicine, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland.
Manuela DonatiDIMES, Microbiology, University of Bologna, Bologna, Italy.
Antonietta Di FrancescoDepartment of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia (BO), Italy.
Michael HässigDepartment for Farm Animals, Section for Herd Health, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland.
Sabrina WanningerInstitute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland.
Xaver SidlerDepartment of Farm Animals, Division of Swine Medicine, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland.
Nicole BorelInstitute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland.
University of Zurich · CHUniversity of Bologna · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Chlamydial infections in pigs are associated with respiratory disease, diarrhea, conjunctivitis and other pathologies. The aim of this study was to define the prevalence of Chlamydiaceae in Swiss fattening pigs by applying sensitive and specific detection methods and to correlate prior antibiotic treatment and farm related factors with differences in prevalence. Conjunctival and fecal swabs were collected from 636 pigs in 29 Swiss fattening pig farms with and without antibiotic treatment, at the beginning and the end of the fattening period. The swabs were screened by real-time PCR for Chlamydiaceae. For the chlamydial detection and species-identification, a DNA-microarray analysis was performed. All farms were positive for Chlamydiaceae with 94.3 and 92.0% prevalence in fecal swabs as well as 45.9 and 32.6% in conjunctival swabs at the first and second time points, respectively. Antibiotic treatment could not clear the infection on herd level. Potential contact with wild boars was a significant risk factor, while hygiene criteria did not influence chlamydial prevalence. A correlation of chlamydial positivity to diarrhea, but not to conjunctivitis was evident. Chlamydia suis was the predominant species. Mixed infections with C. suis and C. pecorum were common, with a substantial increase in C. pecorum positivity at the end of the fattening period, and this finding was associated with ruminant contact. C. abortus was detected in one conjunctival swab. In this study, C. suis inhabited the intestinal tract of nearly all examined pigs, implying a long-term infection. C. pecorum was also common and might be transmitted to pigs by ruminants.

Indexed as

AnimalsChlamydiaceaeChlamydia InfectionsFemaleIntestinesMaleSus scrofa

Identifiers

PMID26619187
PMCPMC4664257
OpenAlexW2188652776

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.