Climate Change and Bioaerosols: Impacts on Airborne Microbial Distribution and Public Health

Climate change has an increasing influence on the composition, abundance, and distribution of bioaerosols in the atmosphere. Bioaerosols, which include airborne bacteria, fungi, viruses, pollen, and microbial fragments, represent an important component of atmospheric particulate matter and play a significant role in environmental and public health processes. Changes in temperature, humidity, extreme weather events, and air pollution can alter microbial survival, dispersal, and seasonal patterns in the air. These climatic shifts may enhance the long-distance transport of microorganisms and modify the diversity and concentration of airborne microbial communities. As a result, exposure to pathogenic or allergenic bioaerosols may increase, contributing to respiratory diseases, allergies, and the spread of infectious pathogens. Furthermore, climate-driven environmental disturbances such as dust storms, wildfires, and urbanization can intensify bioaerosol emissions and atmospheric transport. Understanding the interactions between climate change and bioaerosols is therefore essential for predicting microbial dispersion patterns and developing strategies to mitigate associated public health risks.