Effect of exposure to quarry dust on the lung function of exposed communities in Edo State, Nigeria
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Institute for Collective Health, Irrua Specialist Teaching Hospital, Nigeria
Department of Community Medicine, Federal University of Health Sciences, Otukpo, Nigeria
Department of Community Medicine, Irrua Specialist Teaching Hospital, Irrua, Edo State, Nigeria
Publication date: 2023-04-27
Popul. Med. 2023;5(Supplement):A161
Background and Objectives: The health effects of quarry dust on persons living in close proximity to quarries are a public health concern. The impact of community exposure to quarry dust is largely unknown in developing countries. This study assessed exposure to quarry dust and lung function in host communities in Edo State. Methods: A cross-sectional design was used to study 320 residents of two host communities using multi-stage sampling technique. Each community was divided into three risk zones (RZs) based on the relative distances of the residential houses from the quarry site, RZ1 being the most proximal. A semi-structured questionnaire, portable dust metre and spirometer were used for data collection. Analysis of variance was used to compare mean values. Results: Mean indoor total suspended particulates (TSP) ranged from 139.7+81.7 in RZ1 to 130.1+79.8 (µg/m3) in RZ3 whereas mean outdoor TSP ranged from 112.8+37.8 in RZ1 to 87.3+18.5 (µg/m3) in RZ3. Forced expiratory volume in one second ranged from 71.0 + 18.2% in RZ1 to 82.9 + 113.2% in RZ3. The differences in the above parameters were statistically significant. Residents in RZ1 were most likely to have an abnormal lung function with a risk of 58% compared to those in RZ2 (36%) and RZ3 (26%). Conclusions: The indoor and outdoor levels of particulate matter were mostly higher than permissible limits and the risk of abnormal lung function diminished with increasing distance from the quarry. Protective measures for quarry host communities are recommended. Keywords: quarry dust, host community, lung function 
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