Evidence map›Paper›PMID 29466380›Full record

ArticlePloS one2018

Q fever in Egypt: Epidemiological survey of Coxiella burnetii specific antibodies in cattle, buffaloes, sheep, goats and camels.

Jessica Klemmer, John Njeru, Aya Emam, Ahmed El-Sayed, Amira A Moawad, Klaus Henning, Mohamed A Elbeskawy, Carola Sauter-Louis, Reinhard K Straubinger, Heinrich Neubauer and 1 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 60 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
60citing papers in PubMed, 3 pooled it
8.5field-weighted citation impact, top 1% 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

60 citing papers in PubMed, 3 syntheses or guidelines pooled it, 100 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Systematic review ofOne health (Amsterdam, Netherlands) · 2026
    Review
  5. Article
  6. Seroprevalence ofVeterinary sciences · 2025
    Article
  7. Article
  8. Article
  9. Veterinary sciences · 2025
    Article
  10. Article
  11. Article
  12. Article
  13. Seroprevalence ofParasite epidemiology and control · 2024
    Article
  14. Article
  15. Article
  16. Serological investigation ofVeterinary world · 2024
    Article
  17. Exposure toPathogens (Basel, Switzerland) · 2024
    Article
  18. Article
  19. Antibody-Based Assessment ofAnimals : an open access journal from MDPI · 2023
    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

11 authors at 4 institutions in 3 countries.

Jessica KlemmerInstitute of Bacterial Infections and Zoonoses, Friedrich-Loeffler-Institut, Jena, Germany.ORCID 0000-0001-9301-8389
John NjeruCentre for Microbiology Research, Kenya Medical Research Institute, Nairobi, Kenya.
Aya EmamMansoura Provincial Laboratory, Institute of Animal Health Research, Mansoura, Egypt.
Ahmed El-SayedAlshalateen Provincial Laboratory, Institute of Animal Health Research, Alshalateen, Egypt.
Amira A MoawadInstitute of Bacterial Infections and Zoonoses, Friedrich-Loeffler-Institut, Jena, Germany.
Klaus HenningInstitute of Bacterial Infections and Zoonoses, Friedrich-Loeffler-Institut, Jena, Germany.
Mohamed A ElbeskawyDepartment of Internal Medicine, Infectious Diseases and Fish Diseases, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt.
Carola Sauter-LouisInstitute of Epidemiology, Friedrich-Loeffler-Institut, Greifswald, Germany.
Reinhard K StraubingerInstitute of Infectious Diseases and Zoonoses, Department of Veterinary Sciences, Faculty of Veterinary Medicine, Ludwig-Maximilian University, Munich, Germany.
Heinrich NeubauerInstitute of Bacterial Infections and Zoonoses, Friedrich-Loeffler-Institut, Jena, Germany.
Mohamed M El-DiastyMansoura Provincial Laboratory, Institute of Animal Health Research, Mansoura, Egypt.
Friedrich-Loeffler-Institut · DEKenya Medical Research Institute · KELudwig-Maximilians-Universität München · DEMansoura University · EG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Q fever is a zoonotic disease caused by the bacterium Coxiella burnetii. Clinical presentation in humans varies from asymptomatic to flu-like illness and severe sequelae may be seen. Ruminants are often sub-clinically infected or show reproductive disorders such as abortions. In Egypt, only limited data on the epidemiology of Q fever in animals are available. Using a stratified two stage random sampling approach, we evaluated the prevalence of Coxiella burnetii specific antibodies among ruminants and camels in 299 herds. A total of 2,699 blood samples was investigated using enzyme-linked-immunosorbent assay (ELISA). Coxiella burnetii specific antibodies were detected in 40.7% of camels (215/528), 19.3% of cattle (162/840), 11.2% of buffaloes (34/304), 8.9% of sheep (64/716) and 6.8% of goats (21/311), respectively. Odds of seropositivity were significantly higher for cattle (aOR: 3.17; 95% CI: 1.96-5.13) and camels (aOR: 9.75; 95% CI: 6.02-15.78). Significant differences in seropositivity were also found between domains (Western Desert, Eastern Desert and Nile Valley and Delta) and 25 governorates (p < 0.001), respectively. Animal rearing in the Eastern Desert domain was found to be a significant risk factor (aOR: 2.16; 95% CI: 1.62-2.88). Most seropositive animals were older than four years. No correlation between positive titers and husbandry practices or animal origin were found (p > 0.05). Only 8.7% of the interviewed people living on the farms consumed raw camel milk and none reported prior knowledge on Q fever. Findings from this nationwide study show that exposure to Coxiella burnetii is common in ruminants and camels. Disease awareness among physicians, veterinarians and animal owners has to be raised. Future epidemiological investigations have to elucidate the impact of Q fever on human health and on the economy of Egypt.

Indexed as

AnimalsAntibodies, BacterialBuffaloesCamelusCattleEgyptEnzyme-Linked Immunosorbent AssayGoatsQ FeverSeroepidemiologic StudiesSheepZoonosesAntibodies, Bacterial

Identifiers

PMID29466380
PMCPMC5821454
OpenAlexW2790273898

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.