Evidence map›Paper›PMID 22632901›Full record

ArticleJournal of clinical virology : the official publication of the Pan American Society for Clinical Virology2012

Enhanced detection of Rift Valley fever virus using molecular assays on whole blood samples.

Allen Grolla, Masfique Mehedi, Robbin Lindsay, Catharine Bosio, Adriano Duse, Heinz Feldmann

Abstract readEvaluation Study
In one paragraph

Article in Journal of clinical virology : the official publication of the Pan American Society for Clinical Virology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 2 pooled it
–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

10 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Article
  4. RNA Editing as a General Trait of Ebolaviruses.The Journal of infectious diseases · 2023
    Article
  5. Tracking Rift Valley fever: From Mali to Europe and other countries, 2016.Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin · 2019
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. A highly pathogenic new bunyavirus emerged in China.Emerging microbes & infections · 2013
    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

6 authors.

Allen GrollaZoonotic Diseases and Special Pathogens, National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Manitoba, Canada.
Masfique Mehedi
Robbin Lindsay
Catharine Bosio
Adriano Duse
Heinz Feldmann

Funding

Viral Hemorrhagic Fevers: Disease Modeling and TransmissionZIAAI001089 · NIAID · NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES · PI FELDMANN, HEINRICH · 2009 to 2025
$50.7M
Understanding the Emergence of Highly Pathogenic Avian Influenza VirusesZIAAI001168 · NIAID · NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES · PI FELDMANN, HEINRICH · 2012 to 2014
$1.3M
Intramural NIH HHS ZIA AI001089
6 · The paper itself

Abstract

backgroundRift Valley fever (RVF) is an emerging arthropod-borne zoonoses of global agricultural and public health importance. In December 2006, an RVF outbreak was recognized in Kenya which led to the deployment of international response laboratory teams to the area.

objectivesA field laboratory was operated in Malindi, Kenya to provide safe sample handling and molecular testing for RVF virus (RVFV) as well as selected other pathogens for differential diagnosis. STUDY

designSafe sample handling was carried out using a negative pressure flexible film isolator (glovebox) and commercial reagents to inactivate clinical specimens and purify nucleic acid. Whole blood was routinely used for diagnostic testing although paired plasma samples were also tested in select cases. Subsequently, human macrophages were tested in vitro for their susceptibility to RVFV.

resultsThe field laboratory received samples from 33 individuals and a definite laboratory diagnosis was provided in 16 of these cases. Using molecular diagnostic techniques, RVFV was more consistently detected in whole blood than in plasma samples most likely due to association of RVFV with blood cells. Subsequent in vitro studies identified macrophages as a target cell for RVFV replication.

conclusionsRVFV appears to replicate in blood cells such as macrophages. Thus, the sensitivity of molecular diagnostic testing is improved if whole blood is used as the clinical specimen rather than plasma or serum.

Indexed as

AnimalsChlorocebus aethiopsHumansKenyaMacrophagesPlasmaPolymerase Chain ReactionReverse Transcriptase Polymerase Chain ReactionRift Valley FeverRift Valley fever virusRNA, ViralSensitivity and SpecificitySerumVero CellsViral LoadRNA, Viral

Identifiers

PMID22632901
PMCPMC3398164

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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.