利用定量微生物风险评估方法评价伊朗哈马丹某污水处理厂健康风险的季节变化

IF 1.4 Q3 PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH
Melika Hooshmandi, Ashraf Mazaheri Tehrani, Majid Habibi Mohraz, Mostafa Leili, Mohammad Javad Assari
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引用次数: 0

摘要

背景:污水处理厂(WWTPs)是空气中细菌污染的一个来源,可能对工作人员的健康构成威胁。本研究的目的是利用定量微生物风险评估(QMRA)方法评估伊朗哈马丹某污水处理厂暴露于金黄色葡萄球菌生物气溶胶的健康风险的季节性变化。研究设计:这是一项描述性横断面研究。方法:本研究测定了夏季和冬季金黄色葡萄球菌生物气溶胶的排放浓度。然后,使用QMRA方法评估了三种暴露情景(工人、现场工程师和实验室技术人员)的健康风险。生物气溶胶样品在2021年夏季和冬季每12天收集一次,使用单级级冲击器(Quick Take 30, SKC Inc.)在室外和室内环境中使用营养琼脂收集。结果:两个季节室外和室内环境的金黄色葡萄球菌生物气溶胶浓度均低于美国政府工业卫生学家会议制定的标准(500 CFU/m3)。而在夏季,室外和室内三种暴露情景的年感染风险和疾病负担分别高于美国环境保护局(≤10-4 pppy)和世界卫生组织(WHO)(≤10-6 DALYs pppy-1)基准。结论:在室内环境的三种暴露情景中,工作人员存在较高的健康风险,不应忽视这一风险,同时强调应采用QMRA方法评估生物气溶胶职业暴露的健康风险,并采取措施保护在污水处理厂工作的工作人员。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Evaluation of Seasonal Variation on the Health Risks Using the Quantitative Microbial Risk Assessment Approach in a Wastewater Treatment Plant in Hamadan, Iran.

Evaluation of Seasonal Variation on the Health Risks Using the Quantitative Microbial Risk Assessment Approach in a Wastewater Treatment Plant in Hamadan, Iran.

Background: Wastewater treatment plants (WWTPs) are a source of airborne bacterial contamination that can pose health risks to staff. The aim of this study was to evaluate seasonal variations in the health risks of exposure to Staphylococcus aureus bioaerosols using the quantitative microbial risk assessment (QMRA) approach in a WWTP in Hamadan, Iran.

Study design: This was a descriptive cross-sectional study.

Methods: This study determined the emission concentrations of S. aureus bioaerosols in summer and winter. Then, the health risks of three exposure scenarios (the worker, field engineer, and laboratory technician) were evaluated using the QMRA approach. The bioaerosol samples were collected every 12 days in both summer and winter of 2021 with a nutrient agar using a single-stage cascade impactor (Quick Take 30, SKC Inc.) in both outdoor and indoor environments.

Results: The results demonstrated that in both seasons, S. aureus bioaerosol concentrations in outdoor and indoor environments were below the standard established by the American Conference of Governmental Industrial Hygienists (500 CFU/m3 ). While in summer, the annual infection risks and the disease burden for the three exposure scenarios in both outdoor and indoor environments were higher than the United States Environmental Protection Agency (≤10-4 pppy) and the World Health Organization (WHO) (≤10-6 DALYs pppy-1) benchmarks, respectively.

Conclusion: The findings provided high health risks for staff in the three exposure scenarios of an indoor environment, which should not be ignored, as well as emphasizing the use of the QMRA approach to estimate health risks caused by occupational exposure to bioaerosols and taking executive measures to protect staff working in the WWTPs.

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来源期刊
Journal of research in health sciences
Journal of research in health sciences PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH-
CiteScore
2.30
自引率
13.30%
发文量
7
期刊介绍: The Journal of Research in Health Sciences (JRHS) is the official journal of the School of Public Health; Hamadan University of Medical Sciences, which is published quarterly. Since 2017, JRHS is published electronically. JRHS is a peer-reviewed, scientific publication which is produced quarterly and is a multidisciplinary journal in the field of public health, publishing contributions from Epidemiology, Biostatistics, Public Health, Occupational Health, Environmental Health, Health Education, and Preventive and Social Medicine. We do not publish clinical trials, nursing studies, animal studies, qualitative studies, nutritional studies, health insurance, and hospital management. In addition, we do not publish the results of laboratory and chemical studies in the field of ergonomics, occupational health, and environmental health
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