Domestic use of bleach and infections in children: a multicentre cross-sectional study

Lidia Casas1, Ana Espinosa2, Alícia Borràs-Santos3

  • 1Centre for Environment and Health, Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain University Pompeu Fabra (UPF), Barcelona, Spain.

Insights

Home bleach use is linked to increased infections in children. Passive exposure to cleaning products may raise risks for respiratory and other illnesses, posing a public health concern.

Area of Science:

  • Environmental Health
  • Pediatric Health
  • Epidemiology

Background:

  • Household cleaning products, particularly bleach, are widely used globally.
  • Concerns exist regarding the potential health impacts of chemical exposures in indoor environments.
  • Previous research has not fully elucidated the association between domestic bleach use and childhood infection rates.

Purpose of the Study:

  • To investigate the relationship between household bleach usage and the incidence of various infections in school-aged children.
  • To quantify the risk of infections associated with passive exposure to cleaning bleach at home.

Main Methods:

  • A cross-sectional study involving 9102 school-aged children (6-12 years) across Spain, the Netherlands, and Finland.
  • Parental questionnaires collected data on infection frequency (influenza, tonsillitis, sinusitis, otitis, bronchitis, pneumonia) and home bleach use.
  • Multivariable mixed-effects regression models and random-effects meta-analyses were employed to assess associations.

Main Results:

  • Bleach use varied significantly by country, being most common in Spain (72%) and least common in Finland (7%).
  • Children in households using bleach exhibited a higher prevalence of infections.
  • Significant associations were found between bleach use and increased risk for influenza (once), recurrent tonsillitis, and any infection.

Conclusions:

  • Passive exposure to household cleaning bleach may negatively impact school-aged children's health.
  • Increased risk of respiratory and other infections is associated with domestic bleach use.
  • The widespread use of disinfecting cleaning agents warrants public health attention due to potential childhood health risks.
Abstract

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