Indoor exposure levels of bacteria and fungi in residences, schools, and offices in China: a systematic review.,Indoor Air

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Indoor exposure levels of bacteria and fungi in residences, schools, and offices in China: a systematic review.
Indoor Air ( IF 5.8 ) Pub Date : 2020-08-26 , DOI: 10.1111/ina.12734
Kangqi Guo ₁ , Hua Qian _{1,

2} , Dongliang Zhao _{1,

2} , Jin Ye ₁ , Yinping Zhang ₃ , Haidong Kan ₄ , Zhuohui Zhao ₄ , Furong Deng ₅ , Chen Huang ₆ , Bin Zhao ₃ , Xiangang Zeng ₇ , Yuexia Sun ₈ , Wei Liu ₉ , Jinhan Mo ₃ , Chanjuan Sun ₆ , Jianguo Guo ₁₀ , Xiaohong Zheng _{1,

2}

Affiliation

School of Energy and Environment, Southeast University, Nanjing, China.
Engineering Research Center of BEEE, Ministry of Education, Nanjing, China.
Department of Building Science, Tsinghua University, Beijing, China.
School of Public Health, Fudan University, Shanghai, China.
School of Public Health, Peking University, Beijing, China.
School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, China.
School of Environment and Natural Resources, Renmin University of China, Beijing, China.
School of Environmental Science and Engineering, Tianjin University, Tianjin, China.
Institute for Health and Environment, Chongqing University of Science and Technology, Chongqing, China.
Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.

Microbes in buildings have attracted extensive attention from both the research community and the general public due to their close relationship with human health. However, there still lacks comprehensive information on the indoor exposure level of microbes in China. This study systematically reviews exposure levels, the community structures, and the impact factors of airborne bacteria and fungi in residences, schools, and offices in China. We reviewed the major literature databases between 1980 and 2019 and selected 55 original studies based on a set of criteria. Results show that the concentration of indoor bacteria varies from 72.5 to 7500 CFU/m³, with a median value of 1000 CFU/m³, and the concentration of fungi varies from 12 to 9730 CFU/m³, with a median value of 526 CFU/m³. The concentration level of microbes varies in different climate zones, with higher bacterial concentrations in the severe cold zone, and higher fungal concentrations in the hot summer and warm winter zone. Among different buildings, classrooms have the highest average bacteria and fungi levels. This review reveals that a unified assessment system based on health effects is needed for evaluating the exposure levels of bacteria and fungi.

更新日期：2020-10-30

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