Cited by 86Child Nutrition and Water AccessPediatric health and respiratory diseasesPoverty, Education, and Child Welfare

Hand-washing, subclinical infections, and growth: a longitudinal evaluation of an intervention in Nepali slums

Langford, Rebecca, Lunn, Peter, Brick, Catherine Panter‐·2011·American Journal of Human Biology

Abstract

OBJECTIVE: We conducted a longitudinal study to assess the impact of a hand-washing intervention on growth and biomarkers of child health in Nepali slums. This is the first study to evaluate the impact of hand-washing on markers of subclinical, asymptomatic infections associated with childhood growth faltering. METHODS: We recruited a total sample of infants in the target age-range (3-12 months) living in the eight largest Kathmandu slums, allocating them to intervention (n = 45) and control (n = 43) groups. In intervention areas, a small-scale community-based hand-washing program was implemented for six months; in control areas, mothers continued their normal practices. Time series linear regression was used to assess the impact of the intervention on levels of morbidity, mucosal damage, immune stimulation and growth. RESULTS: As expected, children with higher levels of mucosal damage exhibited worse growth over the period of the intervention (P = 0.01, <0.001 and 0.03 for height-for-age, weight-for-age, and weight-for-height z-scores, respectively). We observed a 41% reduction in diarrheal morbidity (P = 0.023) for the intervention group relative to control. However, the hand-washing intervention did not lower levels of mucosal damage or immune stimulation, nor slow growth faltering. CONCLUSIONS: Reducing exposure to pathogens is an important global health priority. This study confirms the importance of hand-washing campaigns for reducing childhood morbidity. Yet our data suggest that promoting hand-washing is necessary but not sufficient to address chronic, subclinical infections. From a human biology standpoint, tackling the root causes of childhood infections is needed to address growth faltering in the context of highly contaminated slum environments.

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Crossref · 10.1002/ajhb.21189

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Authors
Langford, R., Lunn, P., & Brick, C. P.
Affiliations
  • University of Bristol (GB)
  • University of Cambridge (GB)
Corresponding author
Langford, Rebecca
Venue
American Journal of Human Biology
Publisher
Wiley
Published
2011-05-31
Volume
23
Issue
5
Pages
621-629
ISSN
  • 1042-0533 (ISSN-L)
  • 1520-6300
OpenAlex
W1969831932
Cited by
86
References
30
Citations by year
2026: 1 · 2024: 4 · 2023: 3 · 2022: 11 · 2021: 6 · 2020: 9 · 2019: 14 · 2018: 7 · 2017: 7 · 2016: 5 · 2015: 7 · 2014: 3 · 2013: 7 · 2012: 1
FWCI
3.25
Type
journal article
Language
en
Open access
closed
Locations
  • American Journal of Human Biology (publishedVersion)
  • PubMed (publishedVersion)
  • Bristol Research (University of Bristol) (submittedVersion)
  • Explore Bristol Research (submittedVersion)
Funders
Economic and Social Research Council (ES/G007543/1)
Topics
  • Health Sciences › Nursing › Nutrition and Dietetics › Child Nutrition and Water Access
  • Health Sciences › Health Professions › Emergency Medical Services › Pediatric health and respiratory diseases
  • Social Sciences › Safety Research › Poverty, Education, and Child Welfare
Keywords
asymptomatic infection, mucosal injury, immunostimulation, infant health, height-for-age z-score, weight-for-age z-score
MeSH terms
Developing Countries, Diarrhea, Growth Disorders, Hand Disinfection, Humans, Infant, Intestinal Mucosa, Longitudinal Studies, Nepal, Poverty Areas, Prospective Studies, Random Allocation, Urban Population, Biomarkers, Asymptomatic Infections

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