Evidence map›Paper›PMID 30788910›Full record

ArticleZoonoses and public health2019

The sero-epidemiology of Coxiella burnetii (Q fever) across livestock species and herding contexts in Laikipia County, Kenya.

Peter S Larson, Leon Espira, Cole Grabow, Christine A Wang, Dishon Muloi, A Springer Browne, Sharon L Deem, Eric M Fèvre, Johannes Foufopoulos, Rebecca Hardin and 1 more

Open access · hybridAbstract read
In one paragraph

Article in Zoonoses and public health, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 3 pooled it
2.6field-weighted citation impact, top 12% 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

31 citing papers in PubMed, 3 syntheses or guidelines pooled it, 34 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Review
  5. Serological Evidence of WidespreadVeterinary sciences · 2026
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  8. Diversity and Distribution ofVeterinary sciences · 2026
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  13. Seroprevalence ofParasite epidemiology and control · 2024
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  15. Serological investigation ofVeterinary world · 2024
    Article
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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

11 authors at 5 institutions in 3 countries.

Peter S LarsonSchool for Environment and Sustainability, University of Michigan, Ann Arbor, Michigan.
Leon EspiraDepartment of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, Michigan.ORCID 0000-0002-1320-3056
Cole GrabowDepartment of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, Michigan.
Christine A WangDepartment of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina.
Dishon MuloiCentre for Immunity, Infection and Evolution, University of Edinburgh, Edinburgh, UK.
A Springer BrowneSaint Louis Zoo Institute for Conservation Medicine, Saint Louis, Missouri.ORCID 0000-0002-0532-3832
Sharon L DeemSaint Louis Zoo Institute for Conservation Medicine, Saint Louis, Missouri.
Eric M FèvreInternational Livestock Research Institute, Nairobi, Kenya.
Johannes FoufopoulosSchool for Environment and Sustainability, University of Michigan, Ann Arbor, Michigan.
Rebecca HardinSchool for Environment and Sustainability, University of Michigan, Ann Arbor, Michigan.
Joseph N S EisenbergDepartment of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, Michigan.
University of Michigan · USSaint Louis Zoo · USCentre for Immunity, Infection and Evolution · GBNorth Carolina State University · USUniversity of Liverpool · GB

Funding

Biotechnology and Biological Sciences Research Council BB/L019019/1Medical Research Council
6 · The paper itself

Abstract

Coxiella burnetii, the causative agent of Query fever (Q fever), is among the most highly infectious zoonotic pathogens transmitted among livestock, with chronic effects challenging to veterinary and medical detection and care systems. Transmission among domestic livestock species can vary regionally due to herd management practices that determine which livestock species are raised, whether or not livestock are in contact with wildlife, and the susceptibility of these livestock to infection. To explore how different livestock management practices are associated with the risk of infection in multispecies environments, we carried out a comparative study of three types of herd management systems in the central Kenyan county of Laikipia: agro-commercial, mixed conservancy/commercial, and smallholder ranches. We tested C. burnetii antibody seroprevalence in four common livestock species. Across all management types, the highest seroprevalence was in camels (20%), followed by goats (18%), sheep (13%), and cattle (6%). We observed a lower odds of testing seropositive for young compared to adult animals (adjusted OR = 0.44 [95% CI 0.24, 0.76]), and for males compared to females (adjusted OR = 0.52 [95% CI 0.33, 0.80]). Animals from mixed conservancy/commercial and smallholder operations had a higher odds of testing seropositive compared to animals from agro-commercial ranches (adjusted OR = 5.17 [95% CI 2.71, 10.44] and adjusted OR = 2.21 [95% CI 1.17, 4.43] respectively). These data suggest that herd management practices might affect the transmission dynamics of C. burnetiiin arid African ecosystems like those seen in Kenya where several transmission modes are possible, risk of drought has promoted new livestock species such as camels, and multiple wildlife species may co-occur with livestock on the landscape. Further longitudinal studies are needed to disentangle the mechanisms underlying these patterns, and further explore transmission patterns between wildlife, domestic animal, and human populations.

Indexed as

Animal HusbandryCoxiella burnetiiAgingAnimalsAntibodies, BacterialFemaleKenyaLivestockMaleOdds RatioQ FeverRisk FactorsSeroepidemiologic StudiesSpecies SpecificityAntibodies, BacterialKenyaland managementlivestock economyQ feverseroepidemiologyzoonosis

Identifiers

PMID30788910
PMCPMC6563451
OpenAlexW2917778662

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.