Evidence map›Paper›PMID 32919074›Full record

ArticleClinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases2020

Sample pooling for SARS-CoV-2 RT-PCR screening.

Adolfo de Salazar, Antonio Aguilera, Rocio Trastoy, Ana Fuentes, Juan Carlos Alados, Manuel Causse, Juan Carlos Galán, Antonio Moreno, Matilde Trigo, Mercedes Pérez-Ruiz and 17 more

Abstract read
In one paragraph

Article in Clinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
–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

32 citing papers in PubMed.

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  20. Pooled Testing Strategies for SARS-CoV-2 diagnosis: A comprehensive review.Diagnostic microbiology and infectious disease · 2021
    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

27 authors.

Adolfo de SalazarClinical Microbiology Unit, Hospital Universitario Clínico San Cecilio, Granada, Spain; Instituto de Investigacion Biosanitaria Ibs.Granada, Granada, Spain.
Antonio AguileraClinical Microbiology Unit, Complexo Hospitalario Universitario de Santiago Santiago de Compostela, Spain; Instituto de Investigación Sanitaria de Santiago, Santiago de Compostela, Spain.
Rocio TrastoyClinical Microbiology Unit, Complexo Hospitalario Universitario de Santiago Santiago de Compostela, Spain; Instituto de Investigación Sanitaria de Santiago, Santiago de Compostela, Spain.
Ana FuentesClinical Microbiology Unit, Hospital Universitario Clínico San Cecilio, Granada, Spain; Instituto de Investigacion Biosanitaria Ibs.Granada, Granada, Spain.
Juan Carlos AladosClinical Microbiology Unit, Hospital Universitario de Jerez, Cádiz, Spain.
Manuel CausseClinical Microbiology Unit, Hospital Universitario Reina Sofía, Córdoba, Spain; Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Córdoba, Spain.
Juan Carlos GalánClinical Microbiology Unit, Hospital Universitario Ramón y Cajal, Madrid, Spain; Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), CIBER en Epidemiología y Salud Pública (CIBERESP), Madrid, Spain.
Antonio MorenoClinical Microbiology Unit, Hospital Universitario Lucus Augusti de Lugo, Lugo, Spain.
Matilde TrigoClinical Microbiology Unit, Complexo Hospitalario Universitario de Pontevedra, Pontevedra, Spain.
Mercedes Pérez-RuizInstituto de Investigacion Biosanitaria Ibs.Granada, Granada, Spain; Clinical Microbiology Unit, Hospital Universitario Virgen de las Nieves, Granada, Spain.
Carolina RoldánClinical Microbiology Unit, Hospital Universitario de Jae, Jaen, Spain.
Maria José PenaClinical Microbiology Unit, Hospital Universitario de Gran Canaria Dr. Negrín, Las Palmas de GC, Gran Canaria, Spain.
Samuel BernalUnit of Infectious Disease and Clinical Microbiology, Hospital Universitario de Valme, Seville, Spain.
Esther Serrano-CondeClinical Microbiology Unit, Hospital Universitario Clínico San Cecilio, Granada, Spain; Instituto de Investigacion Biosanitaria Ibs.Granada, Granada, Spain.
Gema BarbeitoClinical Microbiology Unit, Complexo Hospitalario Universitario de Santiago Santiago de Compostela, Spain; Instituto de Investigación Sanitaria de Santiago, Santiago de Compostela, Spain.
Eva TorresClinical Microbiology Unit, Hospital Universitario de Jerez, Cádiz, Spain.
Cristina RiazzoClinical Microbiology Unit, Hospital Universitario Reina Sofía, Córdoba, Spain; Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Córdoba, Spain.
Jose Luis Cortes-CuevasClinical Microbiology Unit, Hospital Universitario Ramón y Cajal, Madrid, Spain.
Natalia ChuecaClinical Microbiology Unit, Hospital Universitario Clínico San Cecilio, Granada, Spain; Instituto de Investigacion Biosanitaria Ibs.Granada, Granada, Spain.
Amparo CoiraClinical Microbiology Unit, Complexo Hospitalario Universitario de Santiago Santiago de Compostela, Spain; Instituto de Investigación Sanitaria de Santiago, Santiago de Compostela, Spain.
Juan Manuel Sanchez-CalvoClinical Microbiology Unit, Hospital Universitario de Jerez, Cádiz, Spain.
Eduardo MarfilClinical Microbiology Unit, Hospital Universitario Reina Sofía, Córdoba, Spain; Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Córdoba, Spain.
Federico BecerraClinical Microbiology Unit, Hospital Universitario Ramón y Cajal, Madrid, Spain.
María José GudeClinical Microbiology Unit, Hospital Universitario Lucus Augusti de Lugo, Lugo, Spain.
Ángeles PallarésClinical Microbiology Unit, Complexo Hospitalario Universitario de Pontevedra, Pontevedra, Spain.
María Luisa Pérez Del MolinoClinical Microbiology Unit, Complexo Hospitalario Universitario de Santiago Santiago de Compostela, Spain; Instituto de Investigación Sanitaria de Santiago, Santiago de Compostela, Spain.
Federico GarcíaClinical Microbiology Unit, Hospital Universitario Clínico San Cecilio, Granada, Spain; Instituto de Investigacion Biosanitaria Ibs.Granada, Granada, Spain. Electronic address: fegarcia@ugr.es.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo evaluate the efficacy of sample pooling compared to the individual analysis for the diagnosis of coronavirus disease 2019 (COVID-19) by using different commercial platforms for nucleic acid extraction and amplification.

methodsA total of 3519 nasopharyngeal samples received at nine Spanish clinical microbiology laboratories were processed individually and in pools (342 pools of ten samples and 11 pools of nine samples) according to the existing methodology in place at each centre.

resultsWe found that 253 pools (2519 samples) were negative and 99 pools (990 samples) were positive; with 241 positive samples (6.85%), our pooling strategy would have saved 2167 PCR tests. For 29 pools (made out of 290 samples), we found discordant results when compared to their correspondent individual samples, as follows: in 22 of 29 pools (28 samples), minor discordances were found; for seven pools (7 samples), we found major discordances. Sensitivity, specificity and positive and negative predictive values for pooling were 97.10% (95% confidence interval (CI), 94.11-98.82), 100%, 100% and 99.79% (95% CI, 99.56-99.90) respectively; accuracy was 99.80% (95% CI, 99.59-99.92), and the kappa concordant coefficient was 0.984. The dilution of samples in our pooling strategy resulted in a median loss of 2.87 (95% CI, 2.46-3.28) cycle threshold (C

conclusionsWe found a high efficiency of pooling strategies for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) RNA testing across different RNA extraction and amplification platforms, with excellent performance in terms of sensitivity, specificity and positive and negative predictive values.

Indexed as

BiostatisticsCOVID-19COVID-19 Nucleic Acid TestingHumansMass ScreeningNasopharynxRNA, ViralSARS-CoV-2Sensitivity and SpecificitySpainSpecimen HandlingRNA, ViralPooled analysisRT-PCRSample poolingSARS-CoV-2Sensitivity

Identifiers

PMID32919074
PMCPMC7481316

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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.