Evidence map›Paper›PMID 29157226›Full record

ArticleBMC infectious diseases2017

Remarkable spatial variation in the seroprevalence of Coxiella burnetii after a large Q fever epidemic.

Roan Pijnacker, Johan Reimerink, Lidwien A M Smit, Arianne B van Gageldonk-Lafeber, Jan-Paul Zock, Floor Borlée, Joris Yzermans, Dick J J Heederik, Catharina B M Maassen, Wim van der Hoek

Open access · goldAbstract read
In one paragraph

Article in BMC infectious diseases, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
1.6field-weighted citation impact, top 19% 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

11 citing papers in PubMed, 13 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Seroprevalence ofOpen forum infectious diseases · 2019
    Article
  8. Article
  9. Article
  10. Article
  11. Zoonoses under our noses.Microbes and infection
    Review
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

10 authors at 3 institutions in 2 countries.

Roan PijnackerCentre for Infectious Disease Control, National Institute for Public Health and the Environment, (RIVM), PO Box 1, 3720 BA, Bilthoven, the Netherlands. roan.pijnacker@rivm.nl.ORCID 0000-0002-6408-3074
Johan ReimerinkCentre for Infectious Disease Control, National Institute for Public Health and the Environment, (RIVM), PO Box 1, 3720 BA, Bilthoven, the Netherlands.
Lidwien A M SmitInstitute for Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands.
Arianne B van Gageldonk-LafeberCentre for Infectious Disease Control, National Institute for Public Health and the Environment, (RIVM), PO Box 1, 3720 BA, Bilthoven, the Netherlands.
Jan-Paul ZockNetherlands Institute for Health Services Research, (NIVEL), Utrecht, the Netherlands.
Floor BorléeInstitute for Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands.
Joris YzermansNetherlands Institute for Health Services Research, (NIVEL), Utrecht, the Netherlands.
Dick J J HeederikInstitute for Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands.
Catharina B M MaassenCentre for Infectious Disease Control, National Institute for Public Health and the Environment, (RIVM), PO Box 1, 3720 BA, Bilthoven, the Netherlands.
Wim van der HoekCentre for Infectious Disease Control, National Institute for Public Health and the Environment, (RIVM), PO Box 1, 3720 BA, Bilthoven, the Netherlands.
National Institute for Public Health and the Environment · NLUtrecht University · NLNetherlands Institute for Health Services Research · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPrior to the 2007-2010 Q fever epidemic in the Netherlands, the seroprevalence of antibodies against Coxiella burnetii in the general population was 1.5%, which is low compared to other countries. We aimed to determine the seroprevalence after the Q fever epidemic among people living in the affected area, compare the seroprevalence with the incidence of Q fever notifications during the 2007-2010 Q fever epidemic, and to identify farm exposures associated with having antibodies against C. burnetii.

methodsDuring the period March 2014-February 2015, residents aged 18-70 years from two provinces were invited by general practitioners to complete a questionnaire on their symptoms and personal characteristics and to submit a blood sample. We used the mandatory provincial database of livestock licences to calculate distance to farms/farm animals for each participant. To compare ELISA-positive participants for C. burnetii antibodies with those who were negative, we calculated prevalence ratios (PR) using binominal regression. We compared the C. burnetii seroprevalence in the period March 2014-February 2015 with the incidence of Q fever notifications during the 2007-2010 Q fever epidemic at municipal level by calculating the Spearman correlation coefficient.

resultsOf the 2296 participants (response rate: 34%), 6.1% (n = 139, 95% CI 5.1-7.1%) had C. burnetii antibodies (range in municipalities: 1.7-14.1%). C. burnetii seroprevalence was higher in individuals living within 1000 m of goat farms (PR 3.0; 95% CI 1.4-6.4) or within 1000 m of > 50 goats (PR 1.9; 95% CI 1.2-3.0). Seroprevalence increased with decreasing distance to the closest goat farm that was infected during the epidemic years (< 500 m, PR 9.5, 95% CI 2.8-32; 500-1000 m, PR 4.5, 95% CI 2.6-7.7; 1000-1500 m, PR 2.2, 95% CI 1.1-4.3, 1500-2000 m, PR 1.2, 95% CI 0.6-2.5; > 2000 reference group). There was no significant correlation between C. burnetii seroprevalence and Q fever incidence during the 2007-2010 epidemic (r

conclusionsResults showed a remarkable spatial variation in C. burnetii seroprevalence in a relatively small livestock dense area. It confirms previous evidence that the Q fever epidemic was primarily the result of airborne C. burnetii transmission from Q fever affected goat farms.

Indexed as

Coxiella burnetiiAdultAgedAnimalsAntibodies, BacterialCross-Sectional StudiesDairyingDisease ReservoirsEpidemicsGoatsHumansIncidenceLivestockMiddle AgedNetherlandsPrevalenceAntibodies, BacterialCoxiella burnetiiQ feverRisk factorsSeroprevalenceZoonosis

Identifiers

PMID29157226
PMCPMC5697089
OpenAlexW2769304213

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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.