Evidence map›Paper›PMID 28915243›Full record

ArticlePLoS neglected tropical diseases2017

Rapid, actionable diagnosis of urban epidemic leptospirosis using a pathogenic Leptospira lipL32-based real-time PCR assay.

Irina N Riediger, Robyn A Stoddard, Guilherme S Ribeiro, Sueli M Nakatani, Suzana D R Moreira, Irene Skraba, Alexander W Biondo, Mitermayer G Reis, Alex R Hoffmaster, Joseph M Vinetz and 2 more

Open access · goldAbstract read
In one paragraph

Article in PLoS neglected tropical diseases, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 2 pooled it
4.2field-weighted citation impact, top 5% 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

22 citing papers in PubMed, 2 syntheses or guidelines pooled it, 55 citations in OpenAlex.

  1. Pooled it
  2. Nucleic acid and antigen detection tests for leptospirosis.The Cochrane database of systematic reviews · 2019
    Pooled it
  3. Trial
  4. Postflood Leptospirosis Outbreak Response Due toOpen forum infectious diseases · 2026
    Article
  5. Article
  6. Laboratory Diagnosis of Leptospirosis.Methods in molecular biology (Clifton, N.J.) · 2026
    Review
  7. Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Use of machine-learning algorithms to aid in the early detection of leptospirosis in dogs.Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc · 2022
    Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Identification ofBiosafety and health · 2019
    Article
  19. The preventable efficacy of β-glucan against leptospirosis.PLoS neglected tropical diseases · 2019
    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

12 authors at 6 institutions in 2 countries.

Irina N RiedigerMolecular Biology Section, Central Laboratory of the State of Paraná, Curitiba, Paraná Brazil.ORCID http://orcid.org/0000-0002-4804-0429
Robyn A StoddardNational Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
Guilherme S RibeiroGonçalo Moniz Institute, Oswaldo Cruz Foundation, Brazilian Ministry of Health, Salvador, Bahia, Brazil.
Sueli M NakataniMolecular Biology Section, Central Laboratory of the State of Paraná, Curitiba, Paraná Brazil.
Suzana D R MoreiraHospital das Clínicas, Federal University of the State of Paraná, Curitiba, Paraná, Brazil.
Irene SkrabaMolecular Biology Section, Central Laboratory of the State of Paraná, Curitiba, Paraná Brazil.
Alexander W BiondoDepartment of Veterinary Medicine, Federal University of the State of Paraná, Curitiba, Paraná, Brazil.
Mitermayer G ReisGonçalo Moniz Institute, Oswaldo Cruz Foundation, Brazilian Ministry of Health, Salvador, Bahia, Brazil.
Alex R HoffmasterNational Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
Joseph M VinetzDivision of Infectious Diseases, Department of Medicine, University of California San Diego School of Medicine, La Jolla, California, United States of America.
Albert I KoGonçalo Moniz Institute, Oswaldo Cruz Foundation, Brazilian Ministry of Health, Salvador, Bahia, Brazil.
Elsio A WunderGonçalo Moniz Institute, Oswaldo Cruz Foundation, Brazilian Ministry of Health, Salvador, Bahia, Brazil.
Universidade Estadual do Paraná · BRCenters for Disease Control and Prevention · USYale University · USMinistério da Saúde · BRUniversidade Federal da Bahia · BRUniversity of California San Diego · US

Funding

Yale Clinical and Translational Science Award (U Component)UL1TR001863 · NCATS · YALE UNIVERSITY · PI John H. Krystal, LUCILA OHNO-MACHADO · 2016 to 2026
$102.9M
Naturally-Acquired and Vaccine-Mediated Immunity to LeptospirosisR01AI121207 · NIAID · YALE UNIVERSITY · PI KO, ALBERT ICKSANG, REIS, MITERMAYER GALVAO DOS · 2016 to 2020
$6.4M
Global Health Fellows and Scholars Research TrainingR25TW009338 · FIC · UNIVERSITY OF CALIFORNIA BERKELEY · PI BARRY, MICHELE, KO, ALBERT ICKSANG · 2012 to 2016
$5.2M
Disease Determinants of Urban LeptospirosisU01AI088752 · NIAID · YALE UNIVERSITY · PI KO, ALBERT ICKSANG · 2010 to 2014
$3.6M
Natural History of Urban LeptospirosisR01AI052473 · NIAID · YALE UNIVERSITY · PI KO, ALBERT ICKSANG · 2003 to 2013
$2.8M
Ecoepidemiology of leptospirosis in the urban slums of BrazilR01TW009504 · FIC · YALE UNIVERSITY · PI BEGON, MICHAEL, CHILDS, JAMES EMORY · 2012 to 2016
$2.2M
INTERNATIONAL TRAINING &RESEARCH IN EMERGING INFECTIOUSD43TW000919 · FIC · YALE UNIVERSITY · PI KO, ALBERT ICKSANG · 1997 to 2007
$1.2M
FIC NIH HHS D43 TW000919FIC NIH HHS R01 TW009504FIC NIH HHS R25 TW009338NCATS NIH HHS UL1 TR001863NIAID NIH HHS R01 AI052473NIAID NIH HHS R01 AI121207NIAID NIH HHS U01 AI088752
6 · The paper itself

Abstract

backgroundWith a conservatively estimated 1 million cases of leptospirosis worldwide and a 5-10% fatality rate, the rapid diagnosis of leptospirosis leading to effective clinical and public health decision making is of high importance, and yet remains a challenge. METHODOLOGY: Based on parallel, population-based studies in two leptospirosis-endemic regions in Brazil, a real-time PCR assay which detects lipL32, a gene specifically present in pathogenic Leptospira, was assessed for the diagnostic effectiveness and accuracy. Patients identified by active hospital-based surveillance in Salvador and Curitiba during large urban leptospirosis epidemics were tested. Real-time PCR reactions were performed with DNA-extracted samples obtained from 127 confirmed and 23 unconfirmed cases suspected of leptospirosis, 122 patients with an acute febrile illness other than leptospirosis, and 60 healthy blood donors. PRINCIPAL

findingsThe PCR assay had a limit of detection of 280 Leptospira genomic equivalents/mL. Sensitivity for confirmed cases was 61% for whole blood and 29% for serum samples. Sensitivity was higher (86%) for samples collected within the first 6 days after onset of illness compared to those collected after 7 days (34%). The real-time PCR assay was able to detect leptospiral DNA in blood from 56% of serological non-confirmed cases. The overall specificity of the assay was 99%.

conclusionsThese findings indicate that real-time PCR may be a reliable tool for early diagnosis of leptospirosis, which is decisive for clinical management of severe and life-threatening cases and for public health decision making.

Indexed as

EpidemicsAdultBacterial Outer Membrane ProteinsBrazilDNA, BacterialFemaleHumansLeptospiraLeptospirosisLipoproteinsMaleMiddle AgedReal-Time Polymerase Chain ReactionRNA, Ribosomal, 16SSensitivity and SpecificityBacterial Outer Membrane ProteinsDNA, BacterialLipL32 protein, LeptospiraLipoproteinsRNA, Ribosomal, 16S

Identifiers

PMID28915243
PMCPMC5617227
OpenAlexW2755970632

What OpenQuestion holds

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Registered trials

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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.