Evidence map›Paper›PMID 28633900›Full record

ArticleDiagnostic microbiology and infectious disease2017

Analytical and clinical performance of a Chikungunya qRT-PCR for Central and South America.

Thomas Edwards, Leticia Del Carmen Castillo Signor, Christopher Williams, Clément Larcher, Mauricio Espinel, Jane Theaker, Evelin Donis, Luis E Cuevas, Emily R Adams

Open access · hybridAbstract readComparative StudyEvaluation Study
In one paragraph

Article in Diagnostic microbiology and infectious disease, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
1.0field-weighted citation impact, top 21% 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

16 citing papers in PubMed, 26 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Article
  6. Chikungunya and Dengue Encephalitis: A Critical Narrative Review.Annals of Indian Academy of Neurology · 2025
    Article
  7. Review
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Review
  14. Review
  15. Article
  16. Cellular and Molecular Immune Response to Chikungunya Virus Infection.Frontiers in cellular and infection microbiology · 2018
    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

9 authors at 4 institutions in 3 countries.

Thomas EdwardsResearch Centre for Drugs and Diagnostics, Liverpool School of Tropical Medicine, Liverpool, UK. Electronic address: Thomas.Edwards@lstmed.ac.uk.
Leticia Del Carmen Castillo SignorLaboratorio Nacional de Salud Guatemala, Ministerio de Salud Publica y Asistencia Social de Guatemala, Villa Nueva, Guatemala. Electronic address: Castillo.leticia@lns.gob.gt.
Christopher WilliamsResearch Centre for Drugs and Diagnostics, Liverpool School of Tropical Medicine, Liverpool, UK. Electronic address: Chris.Williams@lstmed.ac.uk.
Clément LarcherQIAGEN Manchester Ltd, Skelton House, Lloyd Street North, Manchester, UK. Electronic address: Clement.Larcher@QIAGEN.com.
Mauricio EspinelUniversidad San Francisco de Quito, Quito, Ecuador. Electronic address: mespinel@usfq.edu.ec.
Jane TheakerQIAGEN Manchester Ltd, Skelton House, Lloyd Street North, Manchester, UK. Electronic address: Jane.Theaker@LGCgroup.com.
Evelin DonisLaboratorio Nacional de Salud Guatemala, Ministerio de Salud Publica y Asistencia Social de Guatemala, Villa Nueva, Guatemala. Electronic address: Donis.evelin@lns.gob.gt.
Luis E CuevasResearch Centre for Drugs and Diagnostics, Liverpool School of Tropical Medicine, Liverpool, UK. Electronic address: Luis.Cuevas@lstmed.ac.uk.
Emily R AdamsResearch Centre for Drugs and Diagnostics, Liverpool School of Tropical Medicine, Liverpool, UK. Electronic address: Emily.Adams@lstmed.ac.uk.
Liverpool School of Tropical Medicine · GBMinistry of Public Health and Social Assistance · GTQiagen (United Kingdom) · GBUniversidad San Francisco de Quito · EC

Funding

Medical Research Council MC_PC_14111Medical Research Council MC_PC_15040
6 · The paper itself

Abstract

Chikungunya was introduced into the Americas in 2015 causing a pandemic across the continent. Testing during the acute phase of infection relies on qRT-PCR, but available assays have a number of limitations. A qRT-PCR assay specific to the chikungunya E1 gene was designed using sequence data from contemporary strains. A probit analysis established the 95% limit of detection as 19.6 copies per reaction. We compared the assay with a US Centers for Disease Control (CDC) chikungunya qRT-PCR as the reference standard. The assay had a sensitivity and specificity of 98.4% and 100% in 90 samples retrospectively collected in Guatemala. In a further 74 febrile samples prospectively collected in Ecuador and Guatemala the test had a sensitivity and specificity of 100% and 98.4%, respectively. Sequencing the nsp4 gene of the discordant positive sample indicated the presence of chikungunya RNA, and mismatches to the primer binding sites of the CDC assay.

Indexed as

AdolescentAdultAgedAged, 80 and overChikungunya FeverChildChild, PreschoolEcuadorFemaleGuatemalaHumansInfantMaleMiddle AgedProspective StudiesReal-Time Polymerase Chain ReactionArbovirusesChikungunyaDiagnosticsMolecular diagnostics,

Identifiers

PMID28633900
PMCPMC5560405
OpenAlexW2622627523

What OpenQuestion holds

Textmetadata
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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.