Evidence map›Paper›PMID 24795480›Full record

ArticleThe Journal of infectious diseases2014

Field evaluation of a real-time fluorescence loop-mediated isothermal amplification assay, RealAmp, for the diagnosis of malaria in Thailand and India.

Jaymin C Patel, Naomi W Lucchi, Priyanka Srivastava, Jessica T Lin, Rungniran Sug-Aram, Supannee Aruncharus, Praveen K Bharti, Man M Shukla, Kanungnit Congpuong, Wichai Satimai and 3 more

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of infectious diseases, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed, 2 pooled it
10.3field-weighted citation impact, top 1% 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

50 citing papers in PubMed, 2 syntheses or guidelines pooled it, 73 citations in OpenAlex.

  1. Pooled it
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  14. Diagnostic Methods for Non-Falciparum Malaria.Frontiers in cellular and infection microbiology · 2021
    Review
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  19. Article
  20. Highly heterogeneous residual malaria risk in western Thailand.International journal for parasitology · 2019
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

13 authors at 5 institutions in 3 countries.

Jaymin C PatelDepartment of Epidemiology, Gillings School of Global Public Health.
Naomi W LucchiMalaria Branch, Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia.
Priyanka SrivastavaRegional Medical Research Centre for Tribals, Jabalpur, India.
Jessica T LinDivision of Infectious Diseases, School of Medicine, University of North Carolina, Chapel Hill.
Rungniran Sug-AramBureau of Vector-Borne Diseases, Ministry of Public Health, Nonthaburi, Thailand.
Supannee AruncharusBureau of Vector-Borne Diseases, Ministry of Public Health, Nonthaburi, Thailand.
Praveen K BhartiRegional Medical Research Centre for Tribals, Jabalpur, India.
Man M ShuklaRegional Medical Research Centre for Tribals, Jabalpur, India.
Kanungnit CongpuongBureau of Vector-Borne Diseases, Ministry of Public Health, Nonthaburi, Thailand.
Wichai SatimaiBureau of Vector-Borne Diseases, Ministry of Public Health, Nonthaburi, Thailand.
Neeru SinghRegional Medical Research Centre for Tribals, Jabalpur, India.
Venkatachalam UdhayakumarMalaria Branch, Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia.
Steven R MeshnickDepartment of Epidemiology, Gillings School of Global Public Health.
Ministry of Public Health · THNational Institute for Research in Tribal Health · INCenters for Disease Control and Prevention · USDivision of Parasitic Diseases and Malaria · USUniversity of North Carolina at Chapel Hill · US

Funding

Genetic determinants of Plasmodium vivax relapseK08AI110651 · NIAID · UNIV OF NORTH CAROLINA CHAPEL HILL · PI LIN, JESSICA · 2014 to 2018
$869k
NIAID NIH HHS K08 AI110651
6 · The paper itself

Abstract

backgroundTo eliminate malaria, surveillance for submicroscopic infections is needed. Molecular methods can detect submicroscopic infections but have not hitherto been amenable to implementation in surveillance programs. A portable loop-mediated isothermal amplification assay called RealAmp was assessed in 2 areas of low malaria transmission.

methodsRealAmp was evaluated in 141 patients from health clinics in India (passive surveillance) and in 127 asymptomatic persons in Thailand (active surveillance). The diagnostic validity, precision, and predictive value of RealAmp were determined using polymerase chain reaction (PCR) as the reference method. A pilot study of RealAmp was also performed on samples from patients presenting at a Thai health center.

resultsA total of 96 and 7 positive cases were detected in India and Thailand, respectively, via PCR. In comparison with nested PCR, the sensitivity and specificity of RealAmp in India were 94.8% (95% confidence interval [CI], 88.3%-98.3%) and 100% (95% CI, 92.1%-100%), respectively, with correct identification of all 5 Plasmodium vivax cases. In Thailand, compared with pooled real-time PCR, RealAmp demonstrated 100% sensitivity (95% CI, 59.0%-100%) and 96.7% specificity (95% CI, 91.7%-99.1%). Testing at the health center demonstrated RealAmp's potential to serve as a point-of-care test with results available in 30-75 minutes.

conclusionRealAmp was comparable to PCR in detecting malaria parasites and shows promise as a tool to detect submicroscopic infections in malaria control and elimination programs worldwide.

Indexed as

AdolescentAdultAgedChildChild, PreschoolFemaleHumansIndiaInfantMalaria, FalciparumMalaria, VivaxMaleMiddle AgedNucleic Acid Amplification TechniquesSensitivity and SpecificityThailanddiagnosiseliminationLAMPloop-mediated isothermal amplificationlow-transmissionmalariaPlasmodium falciparumPlasmodium vivaxpositive predictive valueRealAmpsensitivityspecificitysurveillance

Identifiers

PMID24795480
PMCPMC6373533
OpenAlexW2164575752

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.