Evidence map›Paper›PMID 32059686›Full record

ArticleParasites & vectors2020

Uptake and fecal excretion of Coxiella burnetii by Ixodes ricinus and Dermacentor marginatus ticks.

Sophia Körner, Gustavo R Makert, Katja Mertens-Scholz, Klaus Henning, Martin Pfeffer, Alexander Starke, Ard M Nijhof, Sebastian Ulbert

Open access · goldAbstract read
In one paragraph

Article in Parasites & vectors, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed, 1 pooled it
8.4field-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

32 citing papers in PubMed, 1 synthesis or guideline pooled it, 66 citations in OpenAlex.

  1. The Prevalence ofFrontiers in veterinary science · 2021
    Pooled it
  2. Systematic review ofOne health (Amsterdam, Netherlands) · 2026
    Review
  3. Molecular Detection and Prevalence ofPathogens (Basel, Switzerland) · 2025
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  8. Epidemiology of ZoonoticMicroorganisms · 2023
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  10. Distribution and Prevalence ofMicroorganisms · 2023
    Review
  11. Article
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  13. Article
  14. Article
  15. Changes in theFrontiers in microbiology · 2022
    Article
  16. Article
  17. Review
  18. Article
  19. 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

8 authors at 4 institutions in 1 country.

Sophia KörnerDepartment of Immunology, Fraunhofer Institute for Cell Therapy and Immunology, Leipzig, Germany.
Gustavo R MakertDepartment of Immunology, Fraunhofer Institute for Cell Therapy and Immunology, Leipzig, Germany.
Katja Mertens-ScholzInstitute of Bacterial Infections and Zoonoses (IBIZ), Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Jena, Germany.
Klaus HenningInstitute of Bacterial Infections and Zoonoses (IBIZ), Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Jena, Germany.
Martin PfefferInstitute of Animal Hygiene and Veterinary Public Health, University of Leipzig, Leipzig, Germany.
Alexander StarkeClinic for Ruminants and Swine, Faculty of Veterinary Medicine, University of Leipzig, Leipzig, Germany.
Ard M NijhofInstitute for Parasitology and Tropical Veterinary Medicine, Freie Universität Berlin, Berlin, Germany.
Sebastian UlbertDepartment of Immunology, Fraunhofer Institute for Cell Therapy and Immunology, Leipzig, Germany. Sebastian.ulbert@izi.fraunhofer.de.ORCID http://orcid.org/0000-0001-5910-3643
Friedrich-Loeffler-Institut · DEFraunhofer Institute for Cell Therapy and Immunology · DELeipzig University · DEFreie Universität Berlin · DE

Funding

Bundesministerium für Bildung und Forschung 01KI1720Bundesministerium für Bildung und Forschung 01KI1726CBundesministerium für Bildung und Forschung 0IKI1726G
6 · The paper itself

Abstract

backgroundThe bacterium Coxiella burnetii is the etiological agent of Q fever and is mainly transmitted via inhalation of infectious aerosols. DNA of C. burnetii is frequently detected in ticks, but the role of ticks as vectors in the epidemiology of this agent is still controversial. In this study, Ixodes ricinus and Dermacentor marginatus adults as well as I. ricinus nymphs were fed on blood spiked with C. burnetii in order to study the fate of the bacterium within putative tick vectors.

methodsBlood-feeding experiments were performed in vitro in silicone-membrane based feeding units. The uptake, fecal excretion and transstadial transmission of C. burnetii was examined by quantitative real-time PCR as well as cultivation of feces and crushed tick filtrates in L-929 mouse fibroblast cells and cell-free culture medium.

resultsTicks successfully fed in the feeding system with engorgement rates ranging from 29% (D. marginatus) to 64% (I. ricinus adults). Coxiella burnetii DNA was detected in the feces of both tick species during and after feeding on blood containing 10

conclusionsThese findings show that transstadial transmission of C. burnetii occurs in I. ricinus and confirm that I. ricinus is a potential vector for Q fever. Transmission from both tick species might occur by inhalation of feces containing high amounts of viable C. burnetii rather than via tick bites.

Indexed as

AnimalsBloodCoxiella burnetiiDermacentorDisease VectorsDNA, BacterialFecesFeeding BehaviorFemaleFibroblastsIxodesMaleMiceNymphQ FeverDNA, BacterialCoxiella burnetiiTicksTransmission

Identifiers

PMID32059686
PMCPMC7023696
OpenAlexW3012561760

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.