Insights into the effects of haze pollution on airborne bacterial communities and antibiotic resistance genes in fine particulate matter

This study investigates the effects of haze on airborne bacteria and antibiotic-resistance genes (ARGs) in PM2.5. It found high concentrations of airborne bacteria during haze days, with unique community structures. Microvirga, Arthrobacter, and JG30-KF-CM45 were identified as bacterial biomarkers. Neutral processes contributed more to the establishment of airborne bacterial communities on haze days. The study highlights the impact of haze days on airborne bacteria and ARGs on PM2.5 and provides a reference for managing bioaerosol risks.