Evidence map›Paper›PMID 25606851›Full record

ArticlePLoS neglected tropical diseases2015

Real-time PCR demonstrates high prevalence of Schistosoma japonicum in the Philippines: implications for surveillance and control.

Catherine A Gordon, Luz P Acosta, Geoffrey N Gobert, Remigio M Olveda, Allen G Ross, Gail M Williams, Darren J Gray, Donald Harn, Yuesheng Li, Donald P McManus

Open access · goldAbstract read
In one paragraph

Article in PLoS neglected tropical diseases, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 2 pooled it
7.2field-weighted citation impact, top 2% 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

34 citing papers in PubMed, 2 syntheses or guidelines pooled it, 87 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Tropical medicine and infectious disease · 2026
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  20. Molecular identification ofParasitology · 2020
    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

10 authors at 5 institutions in 3 countries.

Catherine A GordonMolecular Parasitology Laboratory, Infectious Diseases Division, QIMR Berghofer Medical Research Institute, Brisbane, Australia; Discipline of Epidemiology and Biostatistics, School of Population Health, University of Queensland, Brisbane, Australia.
Luz P AcostaDepartment of Immunology, Research Institute of Tropical Medicine, Manila, Philippines.
Geoffrey N GobertMolecular Parasitology Laboratory, Infectious Diseases Division, QIMR Berghofer Medical Research Institute, Brisbane, Australia.
Remigio M OlvedaDepartment of Immunology, Research Institute of Tropical Medicine, Manila, Philippines.
Allen G RossGriffith Health Institute, Griffith University, Queensland, Australia.
Gail M WilliamsDiscipline of Epidemiology and Biostatistics, School of Population Health, University of Queensland, Brisbane, Australia.
Darren J GrayMolecular Parasitology Laboratory, Infectious Diseases Division, QIMR Berghofer Medical Research Institute, Brisbane, Australia; Discipline of Epidemiology and Biostatistics, School of Population Health, University of Queensland, Brisbane, Australia; Research School of Population Health, College of Medicine, Biology and Environment, the Australian National University, Canberra, Australia.
Donald HarnUniversity of Georgia, College of Veterinary Medicine, Athens, Georgia, United States of America.
Yuesheng LiMolecular Parasitology Laboratory, Infectious Diseases Division, QIMR Berghofer Medical Research Institute, Brisbane, Australia.
Donald P McManusMolecular Parasitology Laboratory, Infectious Diseases Division, QIMR Berghofer Medical Research Institute, Brisbane, Australia.
QIMR Berghofer Medical Research Institute · AUResearch Institute for Tropical Medicine · PHUniversity of Queensland · AUGeorgia College & State University · USGriffith University · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe Philippines has a population of approximately 103 million people, of which 6.7 million live in schistosomiasis-endemic areas with 1.8 million people being at risk of infection with Schistosoma japonicum. Although the country-wide prevalence of schistosomiasis japonica in the Philippines is relatively low, the prevalence of schistosomiasis can be high, approaching 65% in some endemic areas. Of the currently available microscopy-based diagnostic techniques for detecting schistosome infections in the Philippines and elsewhere, most exhibit varying diagnostic performances, with the Kato-Katz (KK) method having particularly poor sensitivity for detecting low intensity infections. This suggests that the actual prevalence of schistosomiasis japonica may be much higher than previous reports have indicated. METHODOLOGY/PRINCIPAL

findingsSix barangay (villages) were selected to determine the prevalence of S. japonicum in humans in the municipality of Palapag, Northern Samar. Fecal samples were collected from 560 humans and examined by the KK method and a validated real-time PCR (qPCR) assay. A high S. japonicum prevalence (90.2%) was revealed using qPCR whereas the KK method indicated a lower prevalence (22.9%). The geometric mean eggs per gram (GMEPG) determined by the qPCR was 36.5 and 11.5 by the KK. These results, particularly those obtained by the qPCR, indicate that the prevalence of schistosomiasis in this region of the Philippines is much higher than historically reported. CONCLUSIONS/SIGNIFICANCE: Despite being more expensive, qPCR can complement the KK procedure, particularly for surveillance and monitoring of areas where extensive schistosomiasis control has led to low prevalence and intensity infections and where schistosomiasis elimination is on the horizon, as for example in southern China.

Indexed as

AdolescentAdultAgedChildCross-Sectional StudiesFemaleHumansMaleMiddle AgedPhilippinesPrevalenceReal-Time Polymerase Chain ReactionSchistosomiasis japonica

Identifiers

PMID25606851
PMCPMC4301913
OpenAlexW1981930269

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.