Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Occupants contribute to pathogens and probiotics in indoor environments
https://orcid.org/0000-0002-4580-8287
Abstract A majority of airborne bacteria in indoor environments are associated with occupants, among which pathogens and probiotics are of particular concern due to their health impacts. Occupants are an important source of indoor bacteria. However, the role of occupants in shaping the distributions of pathogens and probiotics remains to be fully understood. To this end, we collected total suspended particulates from six indoor (office, dormitory, and apartment) and outdoor (crossroad, doorway, and playground) environments, followed by identifying the pathogens and probiotics at the species level via the nanopore sequencing technology. Furthermore, the emission rate of the total bacteria, pathogens (Staphylococcus aureus), and probiotics (Lactobacillus) in the indoor environments were estimated via the culture-dependent method. Our results showed that the indoor/outdoor ratio of relative abundance for pathogens was 2 while that for probiotics was 8. The emission rates of total bacteria, Staphylococcus aureus (pathogen), and Lactobacillus (probiotics) from the occupants were 23380, 1508, and 3994 CFU·person−1·h−1, respectively. Notably, the emission rate of Lactobacillus was highest in the female lavatory compared to those in other environments, suggesting females as an important source of indoor probiotics. Our study offers insights into the occupant contribution to the airborne pathogens and probiotics, and the bacteria-associated health impacts in indoor environments.
Graphical abstract Display Omitted
Highlights Indoor environments harbor more pathogens and probiotics than outdoor environments. Indoor bacteria damage or benefit human bodies, especially the digestive system. Emission rates of bacteria from occupants differ in rooms with different functions. Female is a potential source for indoor probiotics.
Occupants contribute to pathogens and probiotics in indoor environments
https://orcid.org/0000-0002-4580-8287
Abstract A majority of airborne bacteria in indoor environments are associated with occupants, among which pathogens and probiotics are of particular concern due to their health impacts. Occupants are an important source of indoor bacteria. However, the role of occupants in shaping the distributions of pathogens and probiotics remains to be fully understood. To this end, we collected total suspended particulates from six indoor (office, dormitory, and apartment) and outdoor (crossroad, doorway, and playground) environments, followed by identifying the pathogens and probiotics at the species level via the nanopore sequencing technology. Furthermore, the emission rate of the total bacteria, pathogens (Staphylococcus aureus), and probiotics (Lactobacillus) in the indoor environments were estimated via the culture-dependent method. Our results showed that the indoor/outdoor ratio of relative abundance for pathogens was 2 while that for probiotics was 8. The emission rates of total bacteria, Staphylococcus aureus (pathogen), and Lactobacillus (probiotics) from the occupants were 23380, 1508, and 3994 CFU·person−1·h−1, respectively. Notably, the emission rate of Lactobacillus was highest in the female lavatory compared to those in other environments, suggesting females as an important source of indoor probiotics. Our study offers insights into the occupant contribution to the airborne pathogens and probiotics, and the bacteria-associated health impacts in indoor environments.
Graphical abstract Display Omitted
Highlights Indoor environments harbor more pathogens and probiotics than outdoor environments. Indoor bacteria damage or benefit human bodies, especially the digestive system. Emission rates of bacteria from occupants differ in rooms with different functions. Female is a potential source for indoor probiotics.
Occupants contribute to pathogens and probiotics in indoor environments
https://orcid.org/0000-0002-4580-8287
Abstract A majority of airborne bacteria in indoor environments are associated with occupants, among which pathogens and probiotics are of particular concern due to their health impacts. Occupants are an important source of indoor bacteria. However, the role of occupants in shaping the distributions of pathogens and probiotics remains to be fully understood. To this end, we collected total suspended particulates from six indoor (office, dormitory, and apartment) and outdoor (crossroad, doorway, and playground) environments, followed by identifying the pathogens and probiotics at the species level via the nanopore sequencing technology. Furthermore, the emission rate of the total bacteria, pathogens (Staphylococcus aureus), and probiotics (Lactobacillus) in the indoor environments were estimated via the culture-dependent method. Our results showed that the indoor/outdoor ratio of relative abundance for pathogens was 2 while that for probiotics was 8. The emission rates of total bacteria, Staphylococcus aureus (pathogen), and Lactobacillus (probiotics) from the occupants were 23380, 1508, and 3994 CFU·person−1·h−1, respectively. Notably, the emission rate of Lactobacillus was highest in the female lavatory compared to those in other environments, suggesting females as an important source of indoor probiotics. Our study offers insights into the occupant contribution to the airborne pathogens and probiotics, and the bacteria-associated health impacts in indoor environments.
Graphical abstract Display Omitted
Highlights Indoor environments harbor more pathogens and probiotics than outdoor environments. Indoor bacteria damage or benefit human bodies, especially the digestive system. Emission rates of bacteria from occupants differ in rooms with different functions. Female is a potential source for indoor probiotics.
Occupants contribute to pathogens and probiotics in indoor environments
Liu, Meng (Autor:in) / Gan, Zifeng (Autor:in) / Shen, Bingyang (Autor:in) / Liu, Lumeng (Autor:in) / Zeng, Wenmao (Autor:in) / Li, Qisheng (Autor:in) / Liu, Huan (Autor:in)
Building and Environment ; 213
31.01.2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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