Evidence map›Paper›PMID 31064387›Full record

ArticleParasites & vectors2019

Associations between soil-transmitted helminthiasis and viral, bacterial, and protozoal enteroinfections: a cross-sectional study in rural Laos.

Anna N Chard, Kelly K Baker, Kevin Tsai, Karen Levy, Jeticia R Sistrunk, Howard H Chang, Matthew C Freeman

Open access · goldAbstract read
In one paragraph

Article in Parasites & vectors, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
2.7field-weighted citation impact, top 11% 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

11 citing papers in PubMed, 25 citations in OpenAlex.

  1. Trial
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  8. Concurrent infection of intestinal parasites andParasite epidemiology and control · 2020
    Article
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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

7 authors at 2 institutions in 1 country.

Anna N ChardDepartment of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, 30322, USA.
Kelly K BakerDepartment of Occupational and Environmental Health, College of Public Health, University of Iowa, Iowa City, Iowa, 52242, USA.
Kevin TsaiDepartment of Occupational and Environmental Health, College of Public Health, University of Iowa, Iowa City, Iowa, 52242, USA.
Karen LevyDepartment of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, 30322, USA.
Jeticia R SistrunkDepartment of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, 30322, USA.
Howard H ChangDepartment of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, Georgia, 30322, USA.
Matthew C FreemanDepartment of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, 30322, USA. matthew.freeman@emory.edu.
Emory University · USUniversity of Iowa · US

Funding

Graduate and Postdoctoral Training in ToxicologyT32ES012870 · NIEHS · EMORY UNIVERSITY · PI Carmen Joseph Marsit · 2004 to 2026
$9.1M
Impacts of Human Movement on Regional Strain Distribution of Diarrheagenic E.coliK01AI103544 · NIAID · EMORY UNIVERSITY · PI LEVY, KAREN · 2013 to 2017
$655k
NIAID NIH HHS K01 AI103544NIEHS NIH HHS T32 ES012870
6 · The paper itself

Abstract

backgroundHumans are susceptible to over 1400 pathogens. Co-infection by multiple pathogens is common, and can result in a range of neutral, facilitative, or antagonistic interactions within the host. Soil-transmitted helminths (STH) are powerful immunomodulators, but evidence of the effect of STH infection on the direction and magnitude of concurrent enteric microparasite infections is mixed.

methodsWe collected fecal samples from 891 randomly selected children and adults in rural Laos. Samples were analyzed for 5 STH species, 6 viruses, 9 bacteria, and 5 protozoa using a quantitative reverse transcription polymerase chain reaction (qRT-PCR) assay. We utilized logistic regression, controlling for demographics and household water, sanitation, and hygiene access, to examine the effect of STH infection on concurrent viral, bacterial, and protozoal infection.

resultsWe found that STH infection was associated with lower odds of concurrent viral infection [odds ratio (OR): 0.48, 95% confidence interval (CI): 0.28-0.83], but higher odds of concurrent bacterial infections (OR: 1.81, 95% CI: 1.06-3.07) and concurrent protozoal infections (OR: 1.50, 95% CI: 0.95-2.37). Trends were consistent across STH species.

conclusionsThe impact of STH on odds of concurrent microparasite co-infection may differ by microparasite taxa, whereby STH infection was negatively associated with viral infections but positively associated with bacterial and protozoal infections. Results suggest that efforts to reduce STH through preventive chemotherapy could have a spillover effect on microparasite infections, though the extent of this impact requires additional study. The associations between STH and concurrent microparasite infection may reflect a reverse effect due to the cross-sectional study design. Additional research is needed to elucidate the exact mechanism of the immunomodulatory effects of STH on concurrent enteric microparasite infection.

Indexed as

AdultBacterial InfectionsChildChild, PreschoolCoinfectionCross-Sectional StudiesFecesFemaleHelminthiasisHumansIntestinal DiseasesIntestinal Diseases, ParasiticLaosMalePrevalenceSoilSoilCo-infection WaterEnteric diseasehygiene (WASH)MicroparasiteqPCRsanitationSoil-transmitted helminths (STH)

Identifiers

PMID31064387
PMCPMC6505259
OpenAlexW2947965149

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.