Journal of Research in Environmental Health

Journal of Research in Environmental Health

Determination of Bacterial Bio-aerosols Type and Its Concentration in Indoor Air of Tehran in 2023

Authors
Pezhman Gheitasian 1
Seyed Mohammad Tabatabaee 2
Anooshiravan Mohseni Band-pay 3
Mohammad Reza Massoudinejad 3
Mohsen Farhadi 4
Elham Shariatmadari 5
Mehdi Kamari 6
Maryam Meserghani 7
1 Department of Environmental Health Engineering, deputy of health, Iran University of Medical Sciences, Tehran, Iran.
2 Associate Professor, Department of sports medicine school of medicine, Iran University of medical sciences, Tehran, Iran.
3 Professor, Department of Environmental Health Engineering, School of Public Health, Shahid Beheshti University of Medical Science Tehran, Tehran, Iran
4 Head of the National Tobacco Control Secretariat, Ministry of Health and Medical Education.
5 Deputy of health, Iran University of Medical Sciences, Tehran, Iran.
6 Department of Environmental Health Engineering, Deputy of health, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
7 Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
10.22038/jreh.2024.24359
Abstract
Background and Purpose: Bioaerosols are airborne particles that include living organisms, such as bacteria and fungi, and their related metabolites, including endotoxins. This study aimed to investigate the exposure of individuals to bacterial bioaerosols in indoor air and explore the factors influencing their concentration.

Materials and Methods: This research was conducted across 11 wards of the Camp Collection to assess indoor air quality. A total of 224 samples were analyzed. The resulting bacterial colonies were counted, and bacterial density was expressed as colony-forming units per cubic meter (CFU/m³). The data obtained were analyzed using SPSS, ANOVA.

Results: The mean bacterial concentration was 721 CFU/m³. The most prevalent bacteria identified in the air samples were Staphylococcus aureus and Staphylococcus epidermidis.

Conclusion: In some environments, the bioaerosol concentration in indoor air exceeded the World Health Organization (WHO) guidelines, posing health risks and increasing the likelihood of respiratory diseases. To mitigate these risks, it is recommended to control individual traffic, modify disinfectant types and application procedures on ward surfaces, and establish the standard and suitable ventilation systems.
 
Open Access Policy: This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. To view a copy of this licence, visit https://creativecommons.org/licenses/by/4.0/
Keywords
Bio-Aerosol
Indoor Air
Bacteria
Microbial Diversity
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