Evidence map›Paper›PMID 18448698›Full record

ArticleJournal of clinical microbiology2008

Comparison of PCR, immunofluorescence assay, and pathogen isolation for diagnosis of q fever in humans with spontaneous abortions.

V M Vaidya, S V S Malik, Simranpreet Kaur, Satish Kumar, S B Barbuddhe

Registry-linked trialAbstract readComparative StudyEvaluation Study
In one paragraph

Article in Journal of clinical microbiology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01095328 (Cost-effectiveness of a Screening Strategy for Q Fever Among Pregnant Women in Risk Areas), which is not on this map. Cited by 36 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed, 1 pooled it
2.2field-weighted citation impact, top 14% 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.

NCT01095328 naunknown statusnot on this mapstarted 2010, after this paper: background citation

Cost-effectiveness of a Screening Strategy for Q Fever Among Pregnant Women in Risk Areas: a Clustered Randomized Controlled Trial

TypeinterventionalSponsorUniversity Medical Center GroningenRan2010 to 2011Enrolled4,000ConditionsQ FeverArmsscreening
3 · Its place in the literature

Who cites it

36 citing papers in PubMed, 1 synthesis or guideline pooled it, 86 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Evidence ofNew microbes and new infections · 2025
    Review
  5. Article
  6. Review
  7. Molecular characterisation ofFrontiers in veterinary science · 2025
    Article
  8. Laboratory investigation of causes of bovine abortion and stillbirth in the Republic of Korea, 2014-2020.Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc · 2024
    Article
  9. Article
  10. Microorganisms · 2023
    Article
  11. Article
  12. Article
  13. Diagnosis ofPathogens (Basel, Switzerland) · 2022
    Article
  14. Article
  15. High prevalence ofVeterinary world · 2020
    Article
  16. Seroprevalence and Molecular Characterization ofPathogens (Basel, Switzerland) · 2020
    Article
  17. Article
  18. Article
  19. 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

5 authors at 2 institutions in 1 country.

V M VaidyaDivision of Veterinary Public Health, National Biotechnology Centre, Indian Veterinary Research Institute, Izatnagar, India. drvilasmvaidya@rediffmail.com
S V S Malik
Simranpreet Kaur
Satish Kumar
S B Barbuddhe
Central Coastal Agricultural Research Institute · INIndian Veterinary Research Institute · IN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Coxiella burnetii, an obligate intracellular parasite with a worldwide distribution, is the causative agent of Q fever in humans. We tested a total of 368 samples (placental bits, genital swabs, fecal swabs, and urine and serum samples) collected from women (n = 74) with spontaneous abortions for C. burnetii by a PCR assay targeting IS1111, the repetitive transposon-like region of C. burnetii (trans-PCR); real-time PCR; an indirect immunofluorescence assay (IFA); and the isolation of the pathogen. The IFA showed seropositivity for 25.68% of the women with spontaneous abortions, whereas trans-PCR and real-time PCR each detected the pathogen in 21.62% of cases. Overall, 25.68% of the subjects were positive by one or more assays. Real-time PCR showed a slightly higher level of sensitivity than trans-PCR. With the IFA as the reference, the two PCR assays showed a higher level of sensitivity (84.21%) than pathogen isolation (26.31%), while both the PCR assays and pathogen isolation were specific (100%). The detection of high numbers of C. burnetii cells in clinical samples and the frequent association of the pathogen with cases of spontaneous abortions observed in this study revealed that Q fever remains underdiagnosed and that the prevalence in India is underestimated.

Indexed as

Abortion, SpontaneousAntibodies, BacterialCoxiella burnetiiDNA, BacterialDNA Transposable ElementsFemaleFluorescent Antibody TechniqueHumansIndiaPolymerase Chain ReactionPregnancyPregnancy Complications, InfectiousPrevalenceQ FeverSensitivity and SpecificityAntibodies, BacterialDNA, BacterialDNA Transposable Elements

Identifiers

PMID18448698
PMCPMC2446837
OpenAlexW2113577512

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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.