Evidence map›Paper›PMID 35264152›Full record

ArticleMalaria journal2022

Evaluating malaria prevalence and land cover across varying transmission intensity in Tanzania using a cross-sectional survey of school-aged children.

Cedar L Mitchell, Billy Ngasala, Mark M Janko, Frank Chacky, Jessie K Edwards, Brian W Pence, Ally Mohamed, Lwidiko E Mhamilawa, Twilumba Makene, Thwai Kyaw and 10 more

Open access · goldAbstract read
In one paragraph

Article in Malaria journal, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 1 pooled it
8.0field-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

25 citing papers in PubMed, 1 synthesis or guideline pooled it, 42 citations in OpenAlex.

  1. Pooled it
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  12. Impact of Climate Variability and Interventions on Malaria Incidence and Forecasting in Burkina Faso.International journal of environmental research and public health · 2024
    Article
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  18. Landscape and Socioeconomic Factors Determine Malaria Incidence in Tropical Forest Countries.International journal of environmental research and public health · 2024
    Article
  19. Article
  20. Genetic polymorphism and evidence of signatures of selection in themedRxiv : the preprint server for health sciences · 2024
    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

20 authors at 8 institutions in 4 countries.

Cedar L MitchellDepartment of Epidemiology, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA. cedarmit@live.unc.edu.ORCID http://orcid.org/0000-0002-4811-2074
Billy NgasalaMuhimbili University of Health and Allied Sciences, Dar es Salam, Tanzania.
Mark M JankoInstitute for Health Metrics and Evaluation, University of Washington, Washington, USA.
Frank ChackyGender, Elderly and Children, Ministry of Health, Community Development, Dodoma, Tanzania.
Jessie K EdwardsDepartment of Epidemiology, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA.
Brian W PenceDepartment of Epidemiology, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA.
Ally MohamedGender, Elderly and Children, Ministry of Health, Community Development, Dodoma, Tanzania.
Lwidiko E MhamilawaMuhimbili University of Health and Allied Sciences, Dar es Salam, Tanzania.
Twilumba MakeneMuhimbili University of Health and Allied Sciences, Dar es Salam, Tanzania.
Thwai KyawDivision of Infectious Diseases, University of North Carolina School of Medicine, Chapel Hill, NC, USA.
Fabrizio MolteniGender, Elderly and Children, Ministry of Health, Community Development, Dodoma, Tanzania.
Humphrey MkaliRTI International, Dar es Salaam, Tanzania.
Ssanyu NyinondiRTI International, Dar es Salaam, Tanzania.
Bilali KabulaRTI International, Dar es Salaam, Tanzania.
Naomi SerbantezUS President's Malaria Initiative (PMI), United States Agency for International Development, Dar es Salaam, Tanzania.
Erin L EckertRTI International, Washington, DC, USA.
Chonge KitojoUS President's Malaria Initiative (PMI), United States Agency for International Development, Dar es Salaam, Tanzania.
Erik ReavesPresident's Malaria Initiative, U.S. Centers for Disease Control and Prevention, Dar es Salaam, Tanzania.
Michael EmchDepartment of Epidemiology, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA.
Jonathan J JulianoDivision of Infectious Diseases, University of North Carolina School of Medicine, Chapel Hill, NC, USA.
University of North Carolina at Chapel Hill · USMuhimbili University of Health and Allied Sciences · TZPlan International Tanzania · TZAfrican Malaria Network Trust · TZUnited States Agency for International Development · USRTI International · USSwiss Tropical and Public Health Institute · CHUniversity of Washington · US

Funding

Training in Infectious Disease Epidemiology (TIDE)T32AI070114 · NIAID · UNIV OF NORTH CAROLINA CHAPEL HILL · PI Brian W Pence · 2007 to 2026
$4.0M
Tracking the flow of malaria parasites and drug resistance within the DRC and across its bordersR01AI139520 · NIAID · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI BAILEY, JEFFREY A. · 2018 to 2023
$3.6M
Collaborative Research: Impacts of the African Origin of Plasmodium vivax on Contemporary Parasite PopulationsR01TW010870 · FIC · UNIV OF NORTH CAROLINA CHAPEL HILL · PI JULIANO, JONATHAN J · 2017 to 2021
$2.4M
Mentoring in Translational Malaria GenomicsK24AI134990 · NIAID · UNIV OF NORTH CAROLINA CHAPEL HILL · PI Jonathan J Juliano · 2018 to 2026
$1.6M
Bill and Melinda Gates Foundation OPP1152504FIC NIH HHS R01 TW010870National Institute of Allergy and Infectious Diseases K24AI13499National Institute of Allergy and Infectious Diseases R01TW010870National Institute of Allergy and Infectious Diseases T32 AI 070114NIAID NIH HHS K24 AI134990NIAID NIH HHS R01 AI139520NIAID NIH HHS T32 AI070114United States Agency for International Development 72062118CA-00002
6 · The paper itself

Abstract

backgroundTransmission of malaria in sub-Saharan Africa has become increasingly stratified following decades of malaria control interventions. The extent to which environmental and land cover risk factors for malaria may differ across distinct strata of transmission intensity is not well known and could provide actionable targets to maximize the success of malaria control efforts.

methodsThis study used cross-sectional malaria survey data from a nationally representative cohort of school-aged children in Tanzania, and satellite-derived measures for environmental features and land cover. Hierarchical logistic regression models were applied to evaluate associations between land cover and malaria prevalence within three distinct strata of transmission intensity: low and unstable, moderate and seasonal, and high and perennial.

resultsIn areas with low malaria transmission, each 10-percentage point increase in cropland cover was associated with an increase in malaria prevalence odds of 2.44 (95% UI: 1.27, 5.11). However, at moderate and higher levels of transmission intensity, no association between cropland cover and malaria prevalence was detected. Small associations were observed between greater grassland cover and greater malaria prevalence in high intensity settings (prevalence odds ratio (POR): 1.10, 95% UI: 1.00, 1.21), and between greater forest cover and reduced malaria prevalence in low transmission areas (POR: 0.74, 95% UI: 0.51, 1.03), however the uncertainty intervals of both estimates included the null.

conclusionsThe intensity of malaria transmission appears to modify relationships between land cover and malaria prevalence among school-aged children in Tanzania. In particular, greater cropland cover was positively associated with increased malaria prevalence in areas with low transmission intensity and presents an actionable target for environmental vector control interventions to complement current malaria control activities. As areas are nearing malaria elimination, it is important to re-evaluate environmental risk factors and employ appropriate interventions to effectively address low-level malaria transmission.

Indexed as

MalariaChildCross-Sectional StudiesHumansPrevalenceRisk FactorsTanzaniaLand coverMalariaTransmission intensity

Identifiers

PMID35264152
PMCPMC8905829
OpenAlexW4221070357

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.