Exploring indoor moulds in Dutch houses

This project is a collaborative study between the Westerdijk Fungal Biodiversity Institute (the Netherlands) and BioAware (Belgium), and investigates indoor fungal growth in Dutch homes using a DNA-based technology. By comparing fungal samples from homes with and without visible mould growth, we aim to identify specific fungal species that indicate fungal growth. Our goal is to develop better indoor quality assessments to improve living conditions, especially for lower-income communities.

Indoor fungal growth poses significant health risks, including headaches, allergies, asthma, and more severe infections in people with weakened immune systems. Poor housing conditions, often found in lower socioeconomic communities, contribute to these issues. Rising energy costs have led to reduced heating and ventilation, exacerbating the problem. According to recent studies, around 20 % of houses in the Netherlands suffer from mold problems.

Our project uses a massive DNA sequencing approach to analyze dust samples from Dutch houses. Unlike traditional methods, this technology provides faster, more reliable results. By specifically targeting fungi growing indoors (the so-called indicator species for indoor mould problems) at species-level, better risk assessments can be made.

The deliverable of the project includes an overview of indoor fungi specific for Dutch houses and improved methods for assessing indoor quality. By the project's end, we expect to have better assessment tools for identifying indoor fungal growth. This will lead to healthier living environments, particularly benefiting lower-income households that are disproportionately affected by poor housing conditions. Our findings will contribute to public health policies and practices, ensuring safer, healthier homes for everyone.