Evidence map›Paper›PMID 25085600›Full record

ArticlePreventive veterinary medicine2014

Infection-interactions in Ethiopian village chickens.

J M Bettridge, S E Lynch, M C Brena, K Melese, T Dessie, Z G Terfa, T T Desta, S Rushton, O Hanotte, P Kaiser and 2 more

Abstract read
In one paragraph

Article in Preventive veterinary medicine, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 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

22 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Phylogenetic Analysis and Public Health Implications ofAnimals : an open access journal from MDPI · 2025
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  9. Antibiotics (Basel, Switzerland) · 2021
    Article
  10. Review
  11. International journal of food science · 2021
    Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Whole genome sequencing of multidrug-resistantTropical medicine and health · 2018
    Article
  20. 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

12 authors.

J M BettridgeInstitute of Infection and Global Health, University of Liverpool, Leahurst Campus, Liverpool CH64 7TE, United Kingdom; International Livestock Research Institute, Addis Ababa, Ethiopia. Electronic address: judybett@liv.ac.uk.
S E LynchInstitute of Infection and Global Health, University of Liverpool, Leahurst Campus, Liverpool CH64 7TE, United Kingdom; International Livestock Research Institute, Addis Ababa, Ethiopia.
M C BrenaInstitute of Infection and Global Health, University of Liverpool, Leahurst Campus, Liverpool CH64 7TE, United Kingdom.
K MeleseDebre Zeit Agricultural Research Centre, Ethiopian Institute for Agriculture Research, Debre Zeit, Ethiopia.
T DessieInternational Livestock Research Institute, Addis Ababa, Ethiopia.
Z G TerfaInstitute of Infection and Global Health, University of Liverpool, Leahurst Campus, Liverpool CH64 7TE, United Kingdom; International Livestock Research Institute, Addis Ababa, Ethiopia.
T T DestaInternational Livestock Research Institute, Addis Ababa, Ethiopia; Centre for Genetics and Genomics, School of Biology, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom.
S RushtonSchool of Biology, Newcastle University, Newcastle Upon Tyne, NE1 7RU, United Kingdom.
O HanotteCentre for Genetics and Genomics, School of Biology, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom.
P KaiserThe Roslin Institute and Royal (Dick) School of Veterinary Science, University of Edinburgh, Midlothian EH25 9RG, United Kingdom.
P WigleyInstitute of Infection and Global Health, University of Liverpool, Leahurst Campus, Liverpool CH64 7TE, United Kingdom.
R M ChristleyInstitute of Infection and Global Health, University of Liverpool, Leahurst Campus, Liverpool CH64 7TE, United Kingdom; NIHR Health Protection Research Unit in Emerging and Zoonotic Infections, Liverpool, L69 7BE, United Kingdom.

Funding

Biotechnology and Biological Sciences Research Council BB/H009051/1Biotechnology and Biological Sciences Research Council BB/H009159/1Biotechnology and Biological Sciences Research Council BB/H009396/1Biotechnology and Biological Sciences Research Council BBS/E/D/20320000
6 · The paper itself

Abstract

Chickens raised under village production systems are exposed to a wide variety of pathogens, and current or previous infections may affect their susceptibility to further infections with another parasite, and/or can alter the manifestation of each infection. It is possible that co-infections may be as important as environmental risk factors. However, in cross-sectional studies, where the timing of infection is unknown, apparent associations between infections may be observed due to parasites sharing common risk factors. This study measured antibody titres to 3 viral (Newcastle disease, Marek's disease and infectious bursal disease) and 2 bacterial (Pasteurella multocida and Salmonella) diseases, and the infection prevalence of 3 families of endo- and ecto-parasites (Ascaridida, Eimeria and lice) in 1056 village chickens from two geographically distinct populations in Ethiopia. Samples were collected during 4 cross-sectional surveys, each approximately 6 months apart. Constrained ordination, a technique for analysis of ecological community data, was used to explore this complex dataset and enabled potential relationships to be uncovered and tested despite the different measurements used for the different parasites. It was found that only a small proportion of variation in the data could be explained by the risk factors measured. Very few birds (9/1280) were found to be seropositive to Newcastle disease. Positive relationships were identified between Pasteurella and Salmonella titres; and between Marek's disease and parasitic infections, and these two groups of diseases were correlated with females and males, respectively. This may suggest differences in the way that the immune systems of male and female chickens interact with these parasites. In conclusion, we find that a number of infectious pathogens and their interactions are likely to impact village chicken health and production. Control of these infections is likely to be of importance in future development planning.

Indexed as

ChickensEcosystemAnimalsAntibodies, BacterialAntibodies, ViralBacterial InfectionsCoinfectionCross-Sectional StudiesEthiopiaFemaleMalePoultry DiseasesPrincipal Component AnalysisRisk FactorsVirus DiseasesAntibodies, BacterialAntibodies, ViralCo-infectionConstrained ordinationEthiopiaHost-parasite interactionVillage chicken

Identifiers

PMID25085600
PMCPMC4235779

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.