Evidence map›Paper›PMID 22656068›Full record

ArticleBMC microbiology2012

Molecular method for the characterization of Coxiella burnetii from clinical and environmental samples: variability of genotypes in Spain.

Isabel Jado, Cristina Carranza-Rodríguez, Jesús Félix Barandika, Álvaro Toledo, Cristina García-Amil, Beatriz Serrano, Margarita Bolaños, Horacio Gil, Raquel Escudero, Ana L García-Pérez and 10 more

Abstract readEvaluation Study
In one paragraph

Article in BMC microbiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
–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

17 citing papers in PubMed.

  1. Article
  2. Article
  3. Environmental risk factors of human Q fever in Spain.One health (Amsterdam, Netherlands) · 2025
    Article
  4. Review
  5. Seroepidemiology ofAnimals : an open access journal from MDPI · 2024
    Article
  6. Article
  7. Frontiers in veterinary science · 2022
    Review
  8. Investigating the Role of Micromammals in the Ecology ofAnimals : an open access journal from MDPI · 2021
    Article
  9. Article
  10. Phylogeography of Human and AnimalFrontiers in cellular and infection microbiology · 2020
    Article
  11. Review
  12. Article
  13. Article
  14. Coxiella burnetii - Pathogenic Agent of Q (Query) Fever.Transfusion medicine and hemotherapy : offizielles Organ der Deutschen Gesellschaft fur Transfusionsmedizin und Immunhamatologie · 2014
    Article
  15. Review
  16. Article
  17. 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

20 authors.

Isabel JadoLaboratorio de Espiroquetas y Patógenos Especiales, Department of Bacteriology, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Ctra, de Pozuelo km 2,6, Majadahonda, Madrid, 28220, Spain. ijado@isciii.es
Cristina Carranza-Rodríguez
Jesús Félix Barandika
Álvaro Toledo
Cristina García-Amil
Beatriz Serrano
Margarita Bolaños
Horacio Gil
Raquel Escudero
Ana L García-Pérez
A Sonia Olmeda
Ianire Astobiza
Bruno Lobo
Manuela Rodríguez-Vargas
José Luis Pérez-Arellano
Fernando López-Gatius
Francisco Pascual-Velasco
Gustavo Cilla
Noé F Rodríguez
Pedro Anda

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCoxiella burnetii is a highly clonal microorganism which is difficult to culture, requiring BSL3 conditions for its propagation. This leads to a scarce availability of isolates worldwide. On the other hand, published methods of characterization have delineated up to 8 different genomic groups and 36 genotypes. However, all these methodologies, with the exception of one that exhibited limited discriminatory power (3 genotypes), rely on performing between 10 and 20 PCR amplifications or sequencing long fragments of DNA, which make their direct application to clinical samples impracticable and leads to a scarce accessibility of data on the circulation of C. burnetii genotypes.

resultsTo assess the variability of this organism in Spain, we have developed a novel method that consists of a multiplex (8 targets) PCR and hybridization with specific probes that reproduce the previous classification of this organism into 8 genomic groups, and up to 16 genotypes. It allows for a direct characterization from clinical and environmental samples in a single run, which will help in the study of the different genotypes circulating in wild and domestic cycles as well as from sporadic human cases and outbreaks. The method has been validated with reference isolates. A high variability of C. burnetii has been found in Spain among 90 samples tested, detecting 10 different genotypes, being those adaA negative associated with acute Q fever cases presenting as fever of intermediate duration with liver involvement and with chronic cases. Genotypes infecting humans are also found in sheep, goats, rats, wild boar and ticks, and the only genotype found in cattle has never been found among our clinical samples.

conclusionsThis newly developed methodology has permitted to demonstrate that C. burnetii is highly variable in Spain. With the data presented here, cattle seem not to participate in the transmission of C. burnetii to humans in the samples studied, while sheep, goats, wild boar, rats and ticks share genotypes with the human population.

Indexed as

Environmental MicrobiologyMolecular TypingAnimalsCattleCoxiella burnetiiGenetic VariationGenotypeGoatsHumansMolecular EpidemiologyMultiplex Polymerase Chain ReactionOligonucleotide ProbesQ FeverRatsSheepSpainOligonucleotide Probes

Identifiers

PMID22656068
PMCPMC3413600

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.