Yanjie Wang, Yifan Liu, Changfu Hao, Yan Li, Yang Liu, Haoran Zhu, Bisheng Lai, Hao Dong, Fengguang Chai, Hao Lou, Qing Hong
{"title":"新冠肺炎疫情前后学校医院生物气溶胶特征及风险变化","authors":"Yanjie Wang, Yifan Liu, Changfu Hao, Yan Li, Yang Liu, Haoran Zhu, Bisheng Lai, Hao Dong, Fengguang Chai, Hao Lou, Qing Hong","doi":"10.1007/s11869-025-01803-7","DOIUrl":null,"url":null,"abstract":"<div><p>Indoor campus bioaerosols directly impact the health of students and faculty. Although the COVID-19 pandemic may have altered bioaerosol characteristics in university hospitals, related research remains limited. This study investigated the concentrations, size distributions, microbial compositions and health risks across bioaerosols from four typical sites (NGM: the north gym, SHM: school hospital, CR: classroom, L: library) in 2019 (Pre-COVID). Additionally, we tracked changes in bioaerosol characteristics in the SHM for three years (Pre-COVID: 2019, During-COVID: 2020, Post-COVID: 2021). In Pre-COVID, the bioaerosol concentrations of four sites were as follows: SHM (51 ± 39 CFU/m<sup>3</sup>) > L (49 ± 20 CFU/m<sup>3</sup>) > CR (28 ± 18 CFU/m<sup>3</sup>) > NGM (27 ± 27 CFU/m<sup>3</sup>). The major bacterial genera identified in four sites were <i>Pseudomonas</i>, <i>Sphingomonas</i>, and <i>Sediminibacterium</i>. Monitoring of the SHM revealed that bioaerosol concentrations increased to 100 ± 66 CFU/m<sup>3</sup> in During-COVID and decreased to 69 ± 49 CFU/m<sup>3</sup> in Post-COVID, with highest pathogenic risk observed in Post-COVID. In During-COVID, <i>Brevundimonas</i>, <i>Acinetobacter</i>, and <i>Enterococcus</i> were major bacterial genera. Only <i>Enterobacteriaceae</i> and <i>Pantoea</i>, which were not detected in the previous two years were present in Post-COVID. The proportion of fine particle (size < 2.5 μm) was increased every year, from 24.67% to 58.83%, increasing the risk of inhaling potential pathogens. This study elucidated the characteristic differences of bioaerosols in indoor campus environments and highlighted the changes of bioaerosols at SHM after the COVID-19 pandemic, providing important insights for mitigating the inhalation risks of potential pathogenic bacteria and strengthening public health strategies in university settings.</p><h3>Graphical Abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":49109,"journal":{"name":"Air Quality Atmosphere and Health","volume":"18 9","pages":"2841 - 2852"},"PeriodicalIF":2.9000,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Changes in the characteristics and risks of bioaerosols in school hospital before and after the COVID-19 epidemic\",\"authors\":\"Yanjie Wang, Yifan Liu, Changfu Hao, Yan Li, Yang Liu, Haoran Zhu, Bisheng Lai, Hao Dong, Fengguang Chai, Hao Lou, Qing Hong\",\"doi\":\"10.1007/s11869-025-01803-7\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Indoor campus bioaerosols directly impact the health of students and faculty. Although the COVID-19 pandemic may have altered bioaerosol characteristics in university hospitals, related research remains limited. This study investigated the concentrations, size distributions, microbial compositions and health risks across bioaerosols from four typical sites (NGM: the north gym, SHM: school hospital, CR: classroom, L: library) in 2019 (Pre-COVID). Additionally, we tracked changes in bioaerosol characteristics in the SHM for three years (Pre-COVID: 2019, During-COVID: 2020, Post-COVID: 2021). In Pre-COVID, the bioaerosol concentrations of four sites were as follows: SHM (51 ± 39 CFU/m<sup>3</sup>) > L (49 ± 20 CFU/m<sup>3</sup>) > CR (28 ± 18 CFU/m<sup>3</sup>) > NGM (27 ± 27 CFU/m<sup>3</sup>). The major bacterial genera identified in four sites were <i>Pseudomonas</i>, <i>Sphingomonas</i>, and <i>Sediminibacterium</i>. Monitoring of the SHM revealed that bioaerosol concentrations increased to 100 ± 66 CFU/m<sup>3</sup> in During-COVID and decreased to 69 ± 49 CFU/m<sup>3</sup> in Post-COVID, with highest pathogenic risk observed in Post-COVID. In During-COVID, <i>Brevundimonas</i>, <i>Acinetobacter</i>, and <i>Enterococcus</i> were major bacterial genera. Only <i>Enterobacteriaceae</i> and <i>Pantoea</i>, which were not detected in the previous two years were present in Post-COVID. The proportion of fine particle (size < 2.5 μm) was increased every year, from 24.67% to 58.83%, increasing the risk of inhaling potential pathogens. This study elucidated the characteristic differences of bioaerosols in indoor campus environments and highlighted the changes of bioaerosols at SHM after the COVID-19 pandemic, providing important insights for mitigating the inhalation risks of potential pathogenic bacteria and strengthening public health strategies in university settings.</p><h3>Graphical Abstract</h3>\\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":49109,\"journal\":{\"name\":\"Air Quality Atmosphere and Health\",\"volume\":\"18 9\",\"pages\":\"2841 - 2852\"},\"PeriodicalIF\":2.9000,\"publicationDate\":\"2025-07-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Air Quality Atmosphere and Health\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11869-025-01803-7\",\"RegionNum\":4,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENVIRONMENTAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Air Quality Atmosphere and Health","FirstCategoryId":"93","ListUrlMain":"https://link.springer.com/article/10.1007/s11869-025-01803-7","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
Changes in the characteristics and risks of bioaerosols in school hospital before and after the COVID-19 epidemic
Indoor campus bioaerosols directly impact the health of students and faculty. Although the COVID-19 pandemic may have altered bioaerosol characteristics in university hospitals, related research remains limited. This study investigated the concentrations, size distributions, microbial compositions and health risks across bioaerosols from four typical sites (NGM: the north gym, SHM: school hospital, CR: classroom, L: library) in 2019 (Pre-COVID). Additionally, we tracked changes in bioaerosol characteristics in the SHM for three years (Pre-COVID: 2019, During-COVID: 2020, Post-COVID: 2021). In Pre-COVID, the bioaerosol concentrations of four sites were as follows: SHM (51 ± 39 CFU/m3) > L (49 ± 20 CFU/m3) > CR (28 ± 18 CFU/m3) > NGM (27 ± 27 CFU/m3). The major bacterial genera identified in four sites were Pseudomonas, Sphingomonas, and Sediminibacterium. Monitoring of the SHM revealed that bioaerosol concentrations increased to 100 ± 66 CFU/m3 in During-COVID and decreased to 69 ± 49 CFU/m3 in Post-COVID, with highest pathogenic risk observed in Post-COVID. In During-COVID, Brevundimonas, Acinetobacter, and Enterococcus were major bacterial genera. Only Enterobacteriaceae and Pantoea, which were not detected in the previous two years were present in Post-COVID. The proportion of fine particle (size < 2.5 μm) was increased every year, from 24.67% to 58.83%, increasing the risk of inhaling potential pathogens. This study elucidated the characteristic differences of bioaerosols in indoor campus environments and highlighted the changes of bioaerosols at SHM after the COVID-19 pandemic, providing important insights for mitigating the inhalation risks of potential pathogenic bacteria and strengthening public health strategies in university settings.
期刊介绍：
Air Quality, Atmosphere, and Health is a multidisciplinary journal which, by its very name, illustrates the broad range of work it publishes and which focuses on atmospheric consequences of human activities and their implications for human and ecological health.
It offers research papers, critical literature reviews and commentaries, as well as special issues devoted to topical subjects or themes.
International in scope, the journal presents papers that inform and stimulate a global readership, as the topic addressed are global in their import. Consequently, we do not encourage submission of papers involving local data that relate to local problems. Unless they demonstrate wide applicability, these are better submitted to national or regional journals.
Air Quality, Atmosphere & Health addresses such topics as acid precipitation; airborne particulate matter; air quality monitoring and management; exposure assessment; risk assessment; indoor air quality; atmospheric chemistry; atmospheric modeling and prediction; air pollution climatology; climate change and air quality; air pollution measurement; atmospheric impact assessment; forest-fire emissions; atmospheric science; greenhouse gases; health and ecological effects; clean air technology; regional and global change and satellite measurements.
This journal benefits a diverse audience of researchers, public health officials and policy makers addressing problems that call for solutions based in evidence from atmospheric and exposure assessment scientists, epidemiologists, and risk assessors. Publication in the journal affords the opportunity to reach beyond defined disciplinary niches to this broader readership.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
