Research presented at the European Respiratory Society Congress suggests that certain bacteria found in classroom dust may be linked to reduced lung function in children. Using data from nearly 300 classrooms across 22 European countries, researchers found that higher levels of Streptomyces were associated with lower forced vital capacity, while increased Mycobacterium levels were linked to slightly reduced measures of lung function. The researchers suggest these bacteria may directly irritate the airways or trigger immune and inflammatory responses, although they could also indicate broader problems such as dampness, poor ventilation or inadequate cleaning. Experts stressed that schools do not need to be sterile, but good ventilation, moisture control, regular cleaning and proper building maintenance can help create healthier environments for children’s developing lungs.
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