Department of Environmental Health Engineering, Behbahan Faculty of Medical Sciences, Behbahan, Iran.
Department of Environmental Health Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
Environ Res. 2024 Jul 1;252(Pt 2):118901. doi: 10.1016/j.envres.2024.118901. Epub 2024 Apr 10.
Transmission of fungi in the air and its impact on health are regarded as important public health issues. Bioaerosols play an important role in causing or exacerbating infectious diseases, acute toxic effects, allergies, and cardiopulmonary symptoms. As many people use the public transportation system daily, it is necessary to determine the type and manner of dispersal and abundance of airborne fungi in public transport places. Three public transportation systems including a bus station, a train station, and an airport in Ahvaz city (Iran) were examined. At each of these stations, the air samples were taken from inside and outside the hall stations, and in-vehicle. A bio-stage Anderson sampler was used by suctioning air and passing it over a Petri dish containing culture medium Sabouraud Dextrose Agar (SDA). Relative humidity (RH, %), temperature (T, C), and mass concentration of particulate matter (PM, PM, and PM μg/m) at the sampling points were measured. The highest concentration of airborne fungi was observed in the airport. The concentration of fungi in the ambient air was higher than that in the indoor air of halls and in-vehicle. In all sampling points, the ambient predominant airborne fungi were Cladosporium and Alternaria, while the indoor predominant airborne fungi were Cladosporium, Aspergillus, and Penicillium. The indoor to outdoor ratio showed that the fungi were of an external origin. Due to the influence of the ambient air on indoor air, it is recommended to use proper ventilation and enhance the hygiene level of vehicles in public transportation systems to reduce exposure to environmentally pathogenic bioaerosols.
空气中真菌的传播及其对健康的影响被视为重要的公共卫生问题。生物气溶胶在引起或加剧传染病、急性毒性作用、过敏和心肺症状方面发挥着重要作用。由于许多人每天都使用公共交通系统，因此有必要确定公共交通场所空气中真菌的传播类型和方式以及丰度。对阿瓦兹市（伊朗）的三个公共交通系统，包括一个汽车站、一个火车站和一个机场进行了检查。在这些车站的每一个车站，从大厅内外和车内采集空气样本。使用生物阶段安德森采样器通过抽吸空气并使其通过含有培养基沙氏葡萄糖琼脂（SDA）的培养皿来进行空气采样。在采样点测量相对湿度（RH，%）、温度（T，C）和颗粒物质量浓度（PM、PM 和 PM μg/m）。在机场观察到空气中真菌的浓度最高。环境空气中真菌的浓度高于大厅内空气和车内空气的浓度。在所有采样点，环境空气中主要的空气传播真菌为枝孢属和交链孢属，而室内空气传播真菌主要为枝孢属、曲霉属和青霉属。室内到室外的比值表明真菌来自外部。由于环境空气对室内空气的影响，建议在公共交通系统中使用适当的通风并提高车辆的卫生水平，以减少对环境致病生物气溶胶的暴露。
