Types and Levels of Bioaerosols in Healthcare and Community Indoor Settings in Iran

Context: Bioaerosols are associated with a wide spectrum of health effects, including infections and contagious diseases, acute toxicities, allergies, and even cancer. Evidence Acquisition: Previous publications describing research conducted in healthcare and community settings during the years ۲۰۰۱ - ۲۰۱۶ were included in this analysis. The words bioaerosol, contamination, bacteria, fungi, viruses, and Iran were explored via the use of search engines such as PubMed, Google, Google Scholar, and Science Direct. A total of ۲۸ studies were found. Results: The levels of bacterial contamination were higher than those found in the fungal species. The most isolated of the bacterial species were S. aureus (۳۸.۲۴%) and Micrococci (۳۱.۶%), and the most isolated of the fungal species were Penicillium (۳۲.۲۸%) and Aspergillus spp (۲۲.۷۸%). The highest levels of contamination were detected in infectious disease (ID) settings (mean = ۹۱±۸۶ cfu/m۳ for bacteria and ۲۷ ± ۲۴ for fungi). Moreover, levels of indoor air contamination were lower than the world health organization (WHO) standards, with the exception of S. aureus at ۲۰۱ cfu/m۳ and ۱۸۹ cfu/m۳ in infectious disease (ID) and intensive care unit (ICU) settings, respectively. In terms of geographic area and cultural differences, the numbers of bacterial and fungal agents were not significantly different (i.e., North versus South and East versus West). Moisture levels were significantly related to air contamination (pv = ۰.۰۲). Conclusions: The levels of air contamination inside hospital and healthcare settings were lower than the WHO mean standard. Active air sampling methods are necessary for measuring bioaerosol contamination. There were no significant differences in the levels of contamination found in various indoor settings in Iran. Efficient ventilation systems and contamination prevention or minimization are necessary for these settings.