Evidence map›Paper›PMID 35666764›Full record

ArticlePLoS neglected tropical diseases2022

Comparison of the Serion IgM ELISA and Microscopic Agglutination Test for diagnosis of Leptospira spp. infections in sera from different geographical origins and estimation of Leptospira seroprevalence in the Wiwa indigenous population from Colombia.

Anou Dreyfus, Marie-Thérèse Ruf, Marga Goris, Sven Poppert, Anne Mayer-Scholl, Nadine Loosli, Nadja S Bier, Daniel H Paris, Tshokey Tshokey, John Stenos and 7 more

Open access · goldAbstract read
In one paragraph

Article in PLoS neglected tropical diseases, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
3.4field-weighted citation impact, top 8% 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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 22 citations in OpenAlex.

  1. Pooled it
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  4. Advances in ELISA-based detection of equine leptospirosis.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2026
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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

17 authors at 9 institutions in 6 countries.

Anou DreyfusDepartment of Medicine, Swiss Tropical and Public Health Institute, Basel, Switzerland.ORCID 0000-0002-2501-7736
Marie-Thérèse RufDepartment of Medicine, Swiss Tropical and Public Health Institute, Basel, Switzerland.
Marga GorisDepartment of Medical Microbiology and Infection Prevention, OIE and National Collaborating Centre for Reference and Research on Leptospirosis, Amsterdam University Medical Centre, Amsterdam, the Netherlands.ORCID 0000-0002-0356-0682
Sven PoppertDepartment of Medicine, Swiss Tropical and Public Health Institute, Basel, Switzerland.
Anne Mayer-SchollDepartment of Biological Safety, German Federal Institute for Risk Assessment, Berlin, Germany.
Nadine LoosliDepartment of Medicine, Swiss Tropical and Public Health Institute, Basel, Switzerland.
Nadja S BierDepartment of Biological Safety, German Federal Institute for Risk Assessment, Berlin, Germany.ORCID 0000-0002-1215-7246
Daniel H ParisDepartment of Medicine, Swiss Tropical and Public Health Institute, Basel, Switzerland.ORCID 0000-0003-4743-5987
Tshokey TshokeyDepartment of Pathology and Laboratory Medicine, Jigme Dorji Wangchuck National Referral Hospital, Thimphu, Bhutan.
John StenosAustralian Rickettsial Reference Laboratory, University Hospital Geelong, Geelong, Australia.
Eliharintsoa RajaonarimiranaEpidemiology and Clinical Research Unit, Institut Pasteur de Madagascar, Antananarivo, Madagascar.
Gustavo ConchaOrganización Wiwa Yugumaiun Bunkuanarua Tairona (OWBYT) Valledupar, Colombia.
Jorge OrozcoLa Secretaría de Salud Departamental de la Gobernación de Cesar, Valledupar, Colombia.
Johana ColoradoLaboratorio de Salud Pública de la Secretaría de Salud Departamental, Valledupar, Colombia.
Andrés AristizábalFundación Salud Para El Trópico (FSPT), Santa Marta, Colombia.ORCID 0000-0002-9658-4156
Juan C DibFundación Salud Para El Trópico (FSPT), Santa Marta, Colombia.ORCID 0000-0003-4556-9842
Simone KannMedical Mission Institute, Wuerzburg, Germany.ORCID 0000-0002-8096-0559
Swiss Tropical and Public Health Institute · CHFederal Institute for Risk Assessment · DESecretaría de Salud de Bogotá · COFundación Universitaria Internacional del Tropico Américano · COGeelong Hospital · AUInstitut Pasteur de Madagascar · MGKhesar Gyalpo University of Medical Sciences of Bhutan · BTMedical Mission Institute · DEUniversidad del Norte · CO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Leptospirosis is among the most important zoonotic diseases in (sub-)tropical countries. The research objective was to evaluate the accuracy of the Serion IgM ELISA EST125M against the Microscopic Agglutination Test (MAT = imperfect reference test); to assess its ability to diagnose acute leptospirosis infections and to detect previous exposure to leptospires in an endemic setting. In addition, to estimate the overall Leptospira spp. seroprevalence in the Wiwa indigenous population in North-East Colombia. We analysed serum samples from confirmed leptospirosis patients from the Netherlands (N = 14), blood donor sera from Switzerland (N = 20), and sera from a cross-sectional study in Colombia (N = 321). All leptospirosis ELISA-positive, and a random of negative samples from Colombia were tested by the MAT for confirmation. The ELISA performed with a sensitivity of 100% (95% CI 77% - 100%) and a specificity of 100% (95% CI 83% - 100%) based on MAT confirmed Leptospira spp. positive and negative samples. In the cross-sectional study in Colombia, the ELISA performed with a sensitivity of 100% (95% CI 2-100%) and a specificity of 21% (95% CI 15-28%). Assuming a 5% Leptospira spp. seroprevalence in this population, the positive predictive value was 6% and the negative predictive value 100%. The Leptospira spp. seroprevalence in the Wiwas tested by the ELISA was 39%; however, by MAT only 0.3%. The ELISA is suitable to diagnose leptospirosis in acutely ill patients in Europe several days after onset of disease. For cross-sectional studies it is not recommended due to its low specificity. Despite the evidence of a high leptospirosis prevalence in other study areas and populations in Colombia, the Wiwa do not seem to be highly exposed to Leptospira spp.. Nevertheless, leptospirosis should be considered and tested in patients presenting with febrile illness.

Indexed as

LeptospiraLeptospirosisAgglutination TestsAntibodies, BacterialColombiaCross-Sectional StudiesEnzyme-Linked Immunosorbent AssayHumansImmunoglobulin MIndigenous PeoplesSensitivity and SpecificitySeroepidemiologic StudiesAntibodies, BacterialImmunoglobulin M

Identifiers

PMID35666764
PMCPMC9223614
OpenAlexW4282913902

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.