Song Zhe, Deng Lijuan, Liu Xinyu, Zhou Hongfu, Wu Xinyi, Han Yutong, Liu Wan, Wu Xuelian, Wang Chenxi, He Xuefei, Yu Siyuan, Lu Dingyu, Li Huamin, Gong Huihong
School of Biomedical Engineering and Imaging, Hubei University of Science and Technology, Hubei, China.
Xianning Central Blood Station, China.
Ann Agric Environ Med. 2024 Dec 22;31(4):479-484. doi: 10.26444/aaem/193292. Epub 2024 Oct 7.
Fungal contamination in the air of hospital wards can affect the health of medical staff, patients, and caregivers. Through systematic analysis of the concentration, types, and particle size distribution characteristics of fungi in the air of wards in Wuhan, China, in 2023, it was found that there was no significant correlation between the concentration of fungi in the air of wards and the disease type and personnel density. The main influencing factors were temperature, humidity, and seasonal changes. The distribution characteristics of fungal particle size in the wards of various departments in winter and summer showed a roughly normal distribution, with the percentage of particle size gradually increasing from stage I to stage III. The proportion from stage III to stage V was generally the highest, while the proportion from stage V to stage VI gradually decreased. There was no significant difference in the median diameter of airborne fungal conidia between different departments in winter and summer, and the median diameter of fungal conidia was less than 3.19 μm. The dominant fungal genus in the wards during winter and summer were basically the same, and there was no significant difference compared to wards in other inpatient buildings. The current study indicates that more attentions should be paid to the increasing of filtration efficiency of fungal conidia particle sized from 1.1~4.7 μm, and appropriate antifungal and sterilization drugs, equipments and methods should be selected in the maintenance of daily hygiene, including the operation and management of the air conditioning systems in the inpatient wards.
医院病房空气中的真菌污染会影响医护人员、患者及护理人员的健康。通过对2023年中国武汉病房空气中真菌的浓度、种类及粒径分布特征进行系统分析，发现病房空气中真菌浓度与疾病类型和人员密度之间无显著相关性。主要影响因素为温度、湿度和季节变化。冬夏两季各科室病房真菌粒径分布特征呈大致正态分布，粒径百分比从Ⅰ级到Ⅲ级逐渐增加。Ⅲ级到Ⅴ级的比例总体最高，而Ⅴ级到Ⅵ级的比例逐渐下降。冬夏两季不同科室空气中真菌分生孢子的中位直径无显著差异，真菌分生孢子的中位直径小于3.19μm。冬夏两季病房中优势真菌属基本相同，与其他住院楼病房相比无显著差异。当前研究表明，应更加关注提高1.1~4.7μm粒径真菌分生孢子的过滤效率，在日常卫生维护中应选择合适的抗真菌和消毒药物、设备及方法，包括住院病房空调系统的运行管理。
