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Noninvasive Sampling of Mucosal Lining Fluid for the Quantification of In Vivo Upper Airway Immune-mediator Levels
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Published on: August 7, 2017

Relative moldiness index as predictor of childhood respiratory illness

Stephen J Vesper1, Craig McKinstry, Richard A Haugland

  • 1US Environmental Protection Agency, Cincinnati, OH, USA. vesper.stephen@epa.gov

Journal of Exposure Science & Environmental Epidemiology
|October 13, 2006
PubMed

Insights

A new mold assessment method, the Relative Moldiness Index (RMI), accurately predicts infant respiratory illness, unlike traditional visual inspections. This quantitative PCR-based approach offers better risk assessment for mold exposure in homes.

Area of Science:

  • Environmental health
  • Molecular biology
  • Pediatrics

Background:

  • Traditional visual mold inspections are common but may lack predictive power for health outcomes.
  • Infant respiratory illnesses like wheeze and rhinitis are significant health concerns.
  • Accurate assessment of indoor mold exposure is crucial for public health.

Purpose of the Study:

  • To compare the predictive value of visual mold inspection with a novel mold evaluation method, the Relative Moldiness Index (RMI), for infant respiratory illness.
  • To validate the RMI as a predictor of respiratory conditions in infants.
  • To offer a more reliable method for assessing mold-related health risks in homes.

Main Methods:

  • Collected floor dust samples from 271 homes with infants.
  • Quantified the concentration of 36 mold species using mold-specific quantitative PCR (MSQPCR) to calculate the Relative Moldiness Index (RMI).
  • Classified homes based on visual inspection and RMI, then tracked the development of respiratory illness in infants.

Main Results:

  • Visual mold inspection was not predictive of infant respiratory illness (P=0.27).
  • The RMI, fitted to a logistic function, demonstrated significant predictive value for respiratory illness occurrence.
  • The RMI method allows for nuanced risk assessment based on varying levels of moldiness.

Conclusions:

  • The Relative Moldiness Index (RMI) offers a superior, quantitative method for predicting infant respiratory illness compared to traditional visual mold inspections.
  • This validated RMI approach provides a valuable tool for stakeholders to manage and mitigate mold-related health risks in residential environments.
  • Quantitative PCR-based mold assessment holds promise for improving environmental health evaluations and preventative strategies.

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