Bacteria in classroom dust associated with reduced lung function in children
Common bacteria found in classroom dust are associated with reduced lung function in children, according to research presented at the European Respiratory Society (ERS) Congress in Barcelona, Spain. The research may show us how to make sure schools are healthy environments for children and their developing lungs.
Research presented at the European Respiratory Society Congress reveals a link between common bacteria in classroom dust and reduced lung function in children. Dr. Soutrik Banerjee, of the University of Ferrara and Alten S.A., noted that while indoor air quality in schools is influenced by factors like pollutants, humidity, ventilation, and biological agents, the relationship between specific bacteria in classroom dust and children's lung health has been less understood.
The study, using data from the SINPHONIE study across 22 European countries and nearly 300 classrooms, measured Streptomyces and Mycobacterium spp. bacteria levels in classroom dust and assessed children's lung function using spirometry tests. Results showed that higher levels of Streptomyces were associated with lower forced vital capacity (FVC) by 0.08 liters, while Mycobacterium exposure correlated with reduced forced expiratory volume in one second (FEV₁) by 0.06 liters and peak expiratory flow (PEF) by 0.13 liters/second.
These associations remained significant even after accounting for various factors such as age, gender, BMI, passive smoking, pet allergens, socioeconomic indicators, school building age, region, and local air pollution levels. Banerjee suggests that bacteria might irritate airways or trigger inflammatory pathways, or they could indicate broader environmental issues like dampness, ventilation, or outdoor dust.
Pediatric pulmonologist Professor Alexander Möller emphasized the importance of healthy school buildings, advocating for good indoor air quality through proper ventilation, dampness control, regular cleaning, and building maintenance. The study underscores the significance of maintaining healthy classroom environments for children's lung health.
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