Evidence map›Paper›PMID 40738050›Full record

ArticleInternational journal of hygiene and environmental health2025

Associations between floor material and E. coli contamination in rural Bangladeshi households.

Sumaiya Tazin, Mahfuza Islam, Amy J Pickering, Laura H Kwong, Andrew Mertens, Caitlin Niven, Benjamin F Arnold, Alan E Hubbard, Mahfuja Alam, Debashis Sen and 7 more

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Article in International journal of hygiene and environmental health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

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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

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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

1 citing paper in PubMed.

  1. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

17 authors.

Sumaiya TazinDepartment of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC, USA. Electronic address: stazin@ncsu.edu.
Mahfuza IslamDivision of Environmental Health Sciences, School of Public Health, University of California, Berkeley, CA, USA.
Amy J PickeringDepartment of Civil and Environmental Engineering, University of California, Berkeley, CA, USA; Chan Zuckerberg Biohub, San Francisco, CA, USA.
Laura H KwongDivision of Environmental Health Sciences, School of Public Health, University of California, Berkeley, CA, USA.
Andrew MertensDivision of Epidemiology and Biostatistics, School of Public Health, University of California, Berkeley, CA, USA.
Caitlin NivenDepartment of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC, USA.
Benjamin F ArnoldFrancis I. Proctor Foundation, University of California, San Francisco, CA, USA.
Alan E HubbardDivision of Epidemiology and Biostatistics, School of Public Health, University of California, Berkeley, CA, USA.
Mahfuja AlamEnvironmental Health and WASH, International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh.
Debashis SenEnvironmental Health and WASH, International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh.
Sharmin IslamEnvironmental Health and WASH, International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh.
Mahbubur RahmanEnvironmental Health and WASH, International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh; Global Health and Migration Unit, Department of Women's and Children's Health, Uppsala University, Sweden.
Leanne UnicombEnvironmental Health and WASH, International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh.
Stephen P LubyWoods Institute for the EnvironmentStanford University, CA, USA.
John M ColfordDivision of Epidemiology and Biostatistics, School of Public Health, University of California, Berkeley, CA, USA.
Jade Benjamin-ChungChan Zuckerberg Biohub, San Francisco, CA, USA; Department of Epidemiology and Population Health, Stanford University, CA, USA.
Ayse ErcumenDepartment of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC, USA.

Funding

Effects of sanitation on pathogen transmission and child health in BangladeshR01HD078912 · NICHD · UNIVERSITY OF CALIFORNIA BERKELEY · PI COLFORD, JOHN M · 2014 to 2017
$2.2M
NICHD NIH HHS R01 HD078912
6 · The paper itself

Abstract

backgroundSoil floors are common in low-income countries and can harbor contamination from fecal waste. Soil/dust ingestion from floors or indirectly via hands, water and food can contribute to children's ingestion of fecal organisms. We assessed if finished (e.g., concrete) floors are associated with lower E. coli contamination in the domestic environment in rural Bangladesh.

methodsWe collected samples from 1864 households over 3.5 years, including stored drinking water, child and caregiver hand rinses, courtyard soil, food, and flies (n = 24,118 samples), and enumerated E. coli using IDEXX Quanti-Tray/2000.

resultsControlling for socio-demographics, water/sanitation status, and animal ownership, households with finished floors had slightly lower log10-transformed E. coli counts (Δlog10 = -0.10 (-0.20, 0.00)) and prevalence (prevalence ratio [PR] = 0.90 (0.83, 0.98)) on child hands than households with soil floors; floor material was not associated with contamination levels in other sample types. In subgroup analyses, finished floors were associated with lower E. coli on child hands following heavy rainfall (Δlog10 = -0.23 (-0.39, -0.07)), above-median temperature (Δlog10 = -0.18 (-0.30, -0.06)), and in households with more domestic animals (Δlog10 = -0.16 (-0.32, -0.01)). Finished floors were also associated with slightly lower contamination of stored water following heavy rainfall (PR = 0.89 (0.81, 0.99)) and above-median temperature (PR = 0.91 (0.84, 0.98)), and lower contamination of stored food following higher rainfall and temperature but the associations for food were not statistically significant. DISCUSSION: Measures to control enteric infections in low-income countries should test flooring improvements to reduce exposure to fecal contamination.

Indexed as

Escherichia coliFloors and FloorcoveringsSoil MicrobiologyAnimalsBangladeshDrinking WaterFamily CharacteristicsFecesHumansRural PopulationDrinking WaterDiarrheaDisease transmission pathwaysE. coliEnvironmental samplingFecal indicator bacteriaFloorSoil

Identifiers

PMID40738050

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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.