Evidence map›Paper›PMID 41941505›Full record

ArticlePLOS global public health2026

Indoor and outdoor fine particulate matter and carbon monoxide concentrations in homes of infants in Nairobi, Kenya.

Vincent K Kipter, Faridah H Were, Michael J Gatari, Christopher Zuidema, Edmund Y W Seto, Orly D Stampfer, Barbra A Richardson, Bernard Makau, Priscilla Wanini Edemba, Emily Adhiambo and 6 more

Abstract read
In one paragraph

Article in PLOS global public health, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

16 authors.

Vincent K KipterDepartment of Chemistry, Faculty of Science & Technology, University of Nairobi, Nairobi, Kenya.ORCID https://orcid.org/0000-0002-5497-1334
Faridah H WereDepartment of Chemistry, Faculty of Science & Technology, University of Nairobi, Nairobi, Kenya.
Michael J GatariInstitute of Nuclear Science & Technology, University of Nairobi, Nairobi, Kenya.ORCID https://orcid.org/0000-0001-9193-6901
Christopher ZuidemaDepartment of Environmental & Occupational Health Sciences, University of Washington, Seattle, Washington, United States of America.ORCID https://orcid.org/0000-0002-2233-2706
Edmund Y W SetoDepartment of Environmental & Occupational Health Sciences, University of Washington, Seattle, Washington, United States of America.
Orly D StampferDepartment of Environmental & Occupational Health Sciences, University of Washington, Seattle, Washington, United States of America.ORCID https://orcid.org/0000-0003-2309-1235
Barbra A RichardsonDepartment of Global Health, University of Washington, Seattle, Washington, United States of America.ORCID https://orcid.org/0000-0001-9564-1828
Bernard MakauKenyatta National Hospital, Nairobi, Kenya.
Priscilla Wanini EdembaKenyatta National Hospital, Nairobi, Kenya.
Emily AdhiamboKenyatta National Hospital, Nairobi, Kenya.ORCID https://orcid.org/0009-0000-9134-827X
Julian D MarshallDepartment of Civil & Environmental Engineering, University of Washington, Seattle, Washington, United States of America.ORCID https://orcid.org/0000-0003-4087-1209
Timothy V LarsonDepartment of Environmental & Occupational Health Sciences, University of Washington, Seattle, Washington, United States of America.ORCID https://orcid.org/0000-0003-2208-982X
Catherine J KarrDepartment of Environmental & Occupational Health Sciences, University of Washington, Seattle, Washington, United States of America.
Elizabeth Maleche-ObimboDepartment of Paediatrics and Child Health, University of Nairobi, Nairobi, Kenya.
Sarah Benki-NugentDepartment of Global Health, University of Washington, Seattle, Washington, United States of America.
Anne M RiedererDepartment of Environmental & Occupational Health Sciences, University of Washington, Seattle, Washington, United States of America.ORCID https://orcid.org/0000-0001-9905-5412

Funding

XENOBIOTIC BIOTRANSFORMATION AND DISPOSITIONP30ES007033 · NIEHS · UNIVERSITY OF WASHINGTON · PI Nicole Ann Errett · 1995 to 2026
$42.5M
Air Pollution Exposures in Early Life and Brain Development in ChildrenR01ES032153 · NIEHS · UNIVERSITY OF WASHINGTON · PI BENKI-NUGENT, SARAH F. · 2020 to 2024
$2.7M
NIEHS NIH HHS P30 ES007033NIEHS NIH HHS R01 ES032153
6 · The paper itself

Abstract

Early life exposure to air pollution is associated with adverse health outcomes in children however few studies have investigated children's air pollution exposures in urban settings in sub-Saharan Africa (SSA). We measured fine particulate matter (PM2.5) and carbon monoxide (CO) in homes of infants in Nairobi, Kenya and conducted exploratory analysis of exposure factors. Questionnaires captured household characteristics and self-reported air pollution exposures. Indoor and outdoor 24-hour (24 h) concentrations were measured inside and 1 m outside the house. PM2.5 was sampled using standard gravimetric procedures; CO was measured with direct-reading electrochemical sensors. Forty-eight homes were sampled at median infant age 11.5 months (range 0.8-26.2 months). During sampling, 66.7%, 18.8%, 10.4% and 10.4% of mothers, respectively, reported using liquefied petroleum gas (LPG), ethanol, electricity, and kerosene for cooking. Median indoor and outdoor 24 h PM2.5 concentrations (n = 39) were 39.9 ug/m3 (range, 12.8-519.6 ug/m3) and 23.3 ug/m3 (range, 2.6-68.2 ug/m3), respectively. Most PM2.5 concentrations (97% of indoor; 79% of outdoor) exceeded the World Health Organization (WHO) 24 h air quality guideline (AQG) of 15 ug/m3. Median indoor (n = 47) and outdoor (n = 41) 24 h mean CO concentrations were 0.7 ppm (range, 0-33.9 ppm) and 0.0 ppm (range, 0-1.0 ppm), respectively. Mean indoor CO concentrations exceeded the WHO 24 h AQG of 6.2 ppm in 9% of homes. Despite frequent use of cooking fuels considered to be clean such as LPG and ethanol, PM2.5 and CO levels in infant homes in urban SSA often exceeded the WHO AQGs. Expanded studies of children's air pollution exposures in urban SSA are needed to build awareness and inform policy.

Identifiers

PMID41941505
PMCPMC13052846

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Registered trials

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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.