Evidence map›Paper›PMID 31856156›Full record

SynthesisPLoS neglected tropical diseases2019

Seroprevalence estimates for toxocariasis in people worldwide: A systematic review and meta-analysis.

Ali Rostami, Seyed Mohammad Riahi, Celia V Holland, Ali Taghipour, Mohsen Khalili-Fomeshi, Yadolah Fakhri, Vahid Fallah Omrani, Peter J Hotez, Robin B Gasser

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in PLoS neglected tropical diseases, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 106 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
106citing papers in PubMed, 7 pooled it
16.2field-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

106 citing papers in PubMed, 7 syntheses or guidelines pooled it, 201 citations in OpenAlex.

  1. Pooled it
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  3. Seroprevalence ofInfectious diseases in obstetrics and gynecology · 2024
    Pooled it
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  7. Is there any potential management against COVID-19? A systematic review and meta-analysis.Daru : journal of Faculty of Pharmacy, Tehran University of Medical Sciences · 2020
    Pooled it
  8. Article
  9. Human and Canine Seropositivity toPathogens (Basel, Switzerland) · 2026
    Article
  10. Seroprevalence and Risk Factors Associated with Anti-International journal of environmental research and public health · 2026
    Article
  11. Pathogens Associated with Domestic Cats (Pathogens (Basel, Switzerland) · 2026
    Review
  12. Insights into the seroprevalence ofOne health (Amsterdam, Netherlands) · 2026
    Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Seroprevalence and Risk Factors ofVeterinary medicine international · 2026
    Article
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  19. Article
  20. Article

46 more citing papers are in PubMed but not listed here.

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

9 authors at 7 institutions in 4 countries.

Ali RostamiInfectious Diseases and Tropical Medicine Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran.ORCID 0000-0002-1358-1321
Seyed Mohammad RiahiCardiovascular Disease Research Center, Department of Epidemiology and Biostatistics, Faculty of Health, Birjand University of Medical Sciences, Birjand, Iran.
Celia V HollandDepartment of Zoology, School of Natural Sciences, Trinity College Dublin, Dublin, Ireland.
Ali TaghipourDepartment of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
Mohsen Khalili-FomeshiStudent Research Committee, Babol University of Medical Sciences, Babol, Iran.ORCID 0000-0002-7820-747X
Yadolah FakhriDepartment of Environmental Health Engineering, School of Public Health and Safety, Student Research Committee, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Vahid Fallah OmraniCellular and Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Peter J HotezTexas Children's Hospital Center for Vaccine Development, National School of Tropical Medicine, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States of America.
Robin B GasserDepartment of Veterinary Biosciences, Melbourne Veterinary School, The University of Melbourne, Parkville, VIC, Australia.ORCID 0000-0002-4423-1690
Babol University of Medical Sciences · IRShahid Beheshti University of Medical Sciences · IRBaylor University · USBirjand University of Medical Sciences · IRTarbiat Modares University · IRThe University of Melbourne · AUTrinity College Dublin · IE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundHuman toxocariasis is an important neglected disease. We performed a systematic review and meta-analysis study to estimate the global and regional prevalence of anti-Toxocara serum antibodies (referred to as 'T-seroprevalence') in human populations around the world.

methodsWe searched five international databases (PubMed, EMBASE, Web of Science, SciELO and Scopus) for seroprevalence studies published from 1 January 1980 to 15 March 2019. We used random effect models to calculate the overall T-seroprevalence (with 95% CIs) in all six WHO regions and worldwide. We also conducted subgroup and linear meta-regression analyses to evaluate the impact of socio-demographic, geographical and climatic parameters on seroprevalence.

resultsWe identified 250 eligible studies (253 datasets) comprising 265,327 participants in 71 countries for inclusion in the present meta-analysis. The estimated global T-seroprevalence rate was 19.0% (95%CI, 16.6-21.4%; 62,927/265,327); seroprevalence was highest in the African region (37.7%; 25.7-50.6%) and lowest in the Eastern Mediterranean region (8.2%; 5.1-12.0%). The pooled seroprevalence for other WHO regions was 34.1% (20.2-49.4%) in the South-East Asia; 24.2% (16.0-33.5%) in the Western Pacific; 22.8% (19.7-26.0%) in the American; and 10.5% (8.5-12.8%) in the European regions. A significantly higher T-seroprevalence was associated with a lower income level; lower human development index (HDI); lower latitude; higher humidity; higher temperature; and higher precipitation (P-value < 0.001). Potential risk factors associated with seropositivity to Toxocara included male gender; living in a rural area; young age; close contact with dogs, cats or soil; consumption of raw meat; and the drinking of untreated water.

conclusionsThe present findings indicate high levels of infection with, or exposure to Toxocara spp. in many countries, which calls for increased attention to human toxocariasis and improved measures to prevent adverse health risks of this disease.

Indexed as

AdolescentAdultAgedAged, 80 and overAnimalsAntibodies, HelminthChildChild, PreschoolFemaleGlobal HealthHumansInfantInfant, NewbornMaleMiddle AgedRisk FactorsAntibodies, Helminth

Identifiers

PMID31856156
PMCPMC6922318
OpenAlexW2995849764

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.