Volume 27, Issue 4 (January 2020)
J Birjand Univ Med Sci. 2020, 27(4): 376-384 |
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Saadati Z, Shahryari T, Namaei M H, Sahlabadi F, Ramazani A A. Density of bacterial particles cultivable in the inside and outside air of kindergartens in Birjand, Iran during 2019. Journals of Birjand University of Medical Sciences 2020; 27 (4) :376-384
URL: http://journal.bums.ac.ir/article-1-2844-en.html
URL: http://journal.bums.ac.ir/article-1-2844-en.html
Zahra Saadati1 
, Taher Shahryari * 2, Mohammad Hasan Namaei3 , Fatemeh Sahlabadi4 , Abbas Ali Ramazani5
, Taher Shahryari * 2, Mohammad Hasan Namaei3 , Fatemeh Sahlabadi4 , Abbas Ali Ramazani5
1- Student Research Committee, Birjand University of Medical sciences, Birjand, Iran
2- Social determinants of health research center, Faculty of Health, Department of Environmental Health Engineering, Birjand University of Medical Sciences, Birjand, Iran ,shahryaritaher@yahoo.com
3- Birjand University of Medical Sciences, Infectious Diseases Research Center, Birjand, Iran
4- Student Research Committee, Shahid Beheshti University of Medical Sciences, Thran, Iran
5- Social determinants of health research center, Department of Epidemiology and Biostatistics, Birjand University of Medical Sciences, Birjand, Iran
2- Social determinants of health research center, Faculty of Health, Department of Environmental Health Engineering, Birjand University of Medical Sciences, Birjand, Iran ,
3- Birjand University of Medical Sciences, Infectious Diseases Research Center, Birjand, Iran
4- Student Research Committee, Shahid Beheshti University of Medical Sciences, Thran, Iran
5- Social determinants of health research center, Department of Epidemiology and Biostatistics, Birjand University of Medical Sciences, Birjand, Iran
Abstract: (2248 Views)
Background and Aims: Bioaerosols are airborne particles that contain bacteria, viruse, and fungi. Human show different reactions to bioaerosols. This study aimed to determine the density of bacterial particles cultivable in the inside and outside air of kindergardens in Birjand, Iran.
Materials and Methods: This study was performed based on a descriptive-analytical and cross-sectional research approach. Birjand was divided into five regions based on their geographical location, and six kindergardens were randomly selected. The sampling was performed in the morning shift from all six selected kindergartens. Additionally, triptic soy agar was used as the culture medium, and the sampling was performed at a flow rate of 28.3 L/Min for 35 min at a distance of 0.8 to 1 M above the ground in the center of each class. The data were analyzed in SPSS software (version 16) through the Mann-Whitney and Kruskal-Wallis statistical tests. A p-value less than 0.05 was considered statistically significant.
Results: According to the results, the highest mean bacterial and microbial load and suspended particles were obtained at 3.83±8.04 CFU/m3 and 196.13±382.54 CFU/m3 in February and March, respectively. There was no significant relationship among bacterial density, suspended particles, and temperature (P>0.05). However, a significant relationship was observed between the bacterial density and total suspended particles (P<0.05). There was also a significant relationship between the amount of suspended particles (PM1, PM2.5, PM10) and the environment inside and outside the kindergardens (P<0.05).
Conclusion: It is possible to determine the concentration of bacterial contamination in terms of quantity, type of identified species, and the amount of airborne particles to prevent the adverse health effects.
Materials and Methods: This study was performed based on a descriptive-analytical and cross-sectional research approach. Birjand was divided into five regions based on their geographical location, and six kindergardens were randomly selected. The sampling was performed in the morning shift from all six selected kindergartens. Additionally, triptic soy agar was used as the culture medium, and the sampling was performed at a flow rate of 28.3 L/Min for 35 min at a distance of 0.8 to 1 M above the ground in the center of each class. The data were analyzed in SPSS software (version 16) through the Mann-Whitney and Kruskal-Wallis statistical tests. A p-value less than 0.05 was considered statistically significant.
Results: According to the results, the highest mean bacterial and microbial load and suspended particles were obtained at 3.83±8.04 CFU/m3 and 196.13±382.54 CFU/m3 in February and March, respectively. There was no significant relationship among bacterial density, suspended particles, and temperature (P>0.05). However, a significant relationship was observed between the bacterial density and total suspended particles (P<0.05). There was also a significant relationship between the amount of suspended particles (PM1, PM2.5, PM10) and the environment inside and outside the kindergardens (P<0.05).
Conclusion: It is possible to determine the concentration of bacterial contamination in terms of quantity, type of identified species, and the amount of airborne particles to prevent the adverse health effects.
Type of Study: Original Article |
Subject:
Environmental Health- Air Pollution Control
Received: 2020/04/19 | Accepted: 2020/10/11 | ePublished ahead of print: 2020/11/4 | ePublished: 2020/12/5
Received: 2020/04/19 | Accepted: 2020/10/11 | ePublished ahead of print: 2020/11/4 | ePublished: 2020/12/5
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