Abstract
This study deals with a quantitative and qualitative analysis of indoor airborne microbiota and estimation of microbiological quality of indoor air in faculty's rooms during the summer semester of 2017/18 school year. The concentration of bacteria was significantly higher than the concentration of fungi. The species that belong to human skin microbiota or of environmental origin were identified. According to indoor air quality breakpoints, low to medium/high level of bacterial and fungal air contaminations was noticed.
Highlights
Indoor air constantly contains a certain concentration of microorganisms
Passive sampling of airborne microorganisms by the settle plate method provides a valid health risk assessment as it detects larger bioaerosols which under the effect of gravity falls onto a critical surface, such as a working area in breathing zone (NAPOLI et al, 2012)
The concentration of bacteria was significantly higher than the concentration of fungi (P=0.0005)
Summary
Indoor air constantly contains a certain concentration of microorganisms. In the air, the microorganisms (bacteria, archaea, fungi, protists, and algae) as well as viruses, commonly exist alone or adsorbed on dust particles or saliva/water droplets forming bioaerosols. World Health Organization (WHO) guidelines for indoor air quality: dampness and mold (WHO, 2009) has recognized connection between poor indoor air quality and certain health problems (irritation of mucous membranes, skin and eyes, fatigue, headache, malaise, lethargy, difficulty concentrating, sensitivity to odors and flu-like symptoms). These symptoms are known as Sick Building Syndrome (SBS). The causative agent has not been identified, the cumulative effects of numerous factors (presence of microorganisms and their metabolites, volatile organic compounds, humidity) and their excess level in the air have affected human health
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