Aerobiologia最新文献

{"title":"Distribution patterns of airborne bacteria and fungi in a teaching, public and private hospital in southwestern Nigeria","authors":"Uzodimma Ernest Durugbo,&nbsp;Oluseyi O. Adesanya ,&nbsp;Osho Adeleke,&nbsp;Somade Adetutu,&nbsp;Adejokun Tioluwani,&nbsp;Olupitan Ayobami,&nbsp;Semiu Ayinla Alayande,&nbsp;Amanze Chiagozi Egere,&nbsp;Mba Obasi Odim,&nbsp;Adekunle O. Adedotun","doi":"10.1007/s10453-023-09795-6","DOIUrl":"10.1007/s10453-023-09795-6","url":null,"abstract":"<div><p>Air harbors a substantial number of microorganisms the assessment of which is critical for healthy human living. The assessment of airborne bacteria and fungi in and around three hospitals in southwest Nigeria; the University Teaching hospital Ibadan, Oyo state, the State hospital Ota, Ogun state and a private hospital in Lagos state were carried out using the open petri dish sedimentation technique for three months between March and May 2014 at two weeks intervals. The survey yielded numerous and diverse assemblages of bacteria and fungi. Nineteen bacterial species belonging to twelve genera were isolated namely Alpha-haemolytic <i>Streptococcus, Staphylococcus aureus, S. epidermidis, Escherichia coli, Enterobacter</i> sp<i>., Micrococcus luteus, M. varians, Corynebacterium xerosis, C. kutsceri, Lactobacillus fermentum, L. casei, L. delbruekii, Pseudomonas aureginosa, Clostridium</i> sp., <i>Enterobacter</i> sp., <i>Proteus</i> sp., <i>Streptococcus</i> sp.<i>, Klebsiella</i> sp., and <i>Mycobacterium</i> sp. The fungal assemblages were composed of <i>Aspergillus fumigatus</i>, <i>A. flavus, A. niger, Arthrobotrys</i> sp., <i>Alternaria</i> sp., <i>Bipolaris spicifera</i>, <i>Curvularia clavata, C. affinis, Chrysosporium corda, Candida albicans, Cladosporium</i> sp., <i>Cryptococcus</i> sp., <i>Diplodia</i> sp., <i>Esepedonium</i> sp., <i>Fusarium</i> sp., <i>Geotrichum</i> sp., <i>Humicola</i> sp., <i>Monilia</i> sp., <i>Mucor</i> sp., <i>Penicillium</i> sp., <i>Rhizopus nigricans, R. stolonifer, Talaromyces</i> sp., <i>Torula nigra</i>, and <i>Trichoderma</i> sp<i>.</i> Among these are pathogenic species to which both patients and visitors get exposed to while visiting the hospitals, thereby coming down with nosocomial infections. Some end up worse than they were, while healthy ones get infected coming down with different diseases. The overall assessment highlighted the sanitary conditions of the different units in the hospitals and the need for more aggressive sanitation measures.</p></div>","PeriodicalId":7718,"journal":{"name":"Aerobiologia","volume":"39 4","pages":"393 - 414"},"PeriodicalIF":2.2,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138820754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Airborne bacterial communities associated with particulate matter in Temuco (Chile), one of the most air-polluted cities in South America","authors":"Tay Ruiz-Gil,&nbsp;Joaquín I. Rilling,&nbsp;Marco Campos,&nbsp;Elizabeth Carrazana,&nbsp;So Fujiyoshi,&nbsp;Fumito Maruyama,&nbsp;Daisuke Tanaka,&nbsp;Akihiro Sakatoku,&nbsp;Jun Noda,&nbsp;Jacquelinne J. Acuña,&nbsp;Milko A. Jorquera","doi":"10.1007/s10453-023-09803-9","DOIUrl":"10.1007/s10453-023-09803-9","url":null,"abstract":"<div><p>Temuco city is categorized as one of the most air-polluted cities in Latin America; consequently, an air quality monitoring (AQM) program based on low-volume air samplers has been established by the Chilean government. However, AQM program does not consider any microbiological parameters to be analyzed. In this context, we firstly investigated the bacterial communities contained in particulate matter fractions (PM₁₀ and PM_2.5) collected by AQM program in Temuco city. Secondly, we compared the bacterial communities collected by AQM program with those collected by an environmental monitoring (EM) sampling using a high-volume air sampler. The potential relation between bacterial abundances and some environmental parameters was also addressed. In AQM samples, significant differences of bacterial abundances between PM fractions were not revealed by qPCR, although DNA metabarcoding analysis showed significant differences in bacterial diversities between PM fractions. When both EM and AQM sampling methods were compared, significant differences in abundance and diversity were observed, but differences between PM factions in each method were not found. Independent of sampling method, a negative relation between bacterial abundances and relative humidity was observed. Similarly, Proteobacteria (Pseudomonadota), Bacteroidetes (Bacteroidota) and Actinobacteria (Actinomycetota) were the dominant phyla observed in both methods by DNA metabarcoding analysis. Here, we demonstrated that the AQM program may be used as a source of samples for airborne bacteria studies; however, in case microbiological parameters will be incorporated or adopted in the AQM program, those data should be complemented with other sampling methods.</p></div>","PeriodicalId":7718,"journal":{"name":"Aerobiologia","volume":"39 4","pages":"457 - 476"},"PeriodicalIF":2.2,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138745558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Obituary","authors":"Mini Philip,&nbsp;B. E. Rangaswamy","doi":"10.1007/s10453-023-09800-y","DOIUrl":"10.1007/s10453-023-09800-y","url":null,"abstract":"","PeriodicalId":7718,"journal":{"name":"Aerobiologia","volume":"39 4","pages":"391 - 392"},"PeriodicalIF":2.2,"publicationDate":"2023-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138563706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The relationship between airborne pollen concentration and wind-related parameters in the atmosphere of İzmir, Turkey","authors":"Ulas Uguz","doi":"10.1007/s10453-023-09802-w","DOIUrl":"10.1007/s10453-023-09802-w","url":null,"abstract":"<div><p>Pollen concentration in the atmosphere is strongly affected by changes in meteorological factors, as well as urban and suburban vegetation in the study area. The identification of atmospheric pollen sources and estimates on their concentrations are critical for the quality of life for individuals affected by pollen allergy. In this study, we evaluated the effect of wind on the concentration levels of dominant pollen types (Cupressaceae/Taxaceae, <i>Olea europaea</i>, Pinaceae, Poaceae, <i>Quercus</i> spp., and Urticaceae) recorded in the atmosphere of İzmir, Turkey’s 3rd largest city, in accordance with land cover over a 3-year period. Our results showed higher pollen concentrations for all taxa on days when wind direction was from the southeast toward the city. Elevations around the city, where arboreal taxa are widely distributed, particularly contributed to pollen concentrations through winds blowing from their directions. Besides these environmental elements, plants used in urban landscaping, such as Pinaceae, <i>Olea europaea</i>, and Cupressaceae/Taxaceae also contributed to pollen concentrations in the city’s atmosphere. Although we observed no significant transport from the northern part of the city, we have determined that the agricultural lands in the western and southern parts contribute to the pollen concentrations of Poaceae and <i>Olea europaea</i>. Additionally, we recorded the highest pollen transport for all taxa when wind speed was within the range of 1.6–3.3 m/s, while pollen concentrations declined in higher wind speeds.</p></div>","PeriodicalId":7718,"journal":{"name":"Aerobiologia","volume":"39 4","pages":"441 - 455"},"PeriodicalIF":2.2,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138496225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative study on ventilation and air conditioning system schemes based on virus pollution control in hospital infusion room","authors":"Weixue Cao,&nbsp;Xudong Zhang,&nbsp;Wanxiang Yao,&nbsp;Run Sun,&nbsp;Yutong Du,&nbsp;Quanbin Shi,&nbsp;Zipeng Li","doi":"10.1007/s10453-023-09801-x","DOIUrl":"10.1007/s10453-023-09801-x","url":null,"abstract":"<div><p>COVID-19 is transmitted through droplets or aerosols containing the virus, the very small particles exhaled by infected people or exposure to items infected with the virus. These droplets, aerosols and particles may be inhaled by others, or fall into their eyes, mouth and nose. In some cases, they may contaminate the contact surface. It is most likely to be infected if they are less than 1 m away from the infected person. To evaluate the effects of different air conditioning systems on the spread of human exhaled pollutants, computational fluid dynamics (CFD) was used to study the movement and diffusion of exhaled air from two rows of 12 sitting adults in a hospital's closed transfusion room. In this paper, a closed transfusion room with 12 human models was established firstly, and the mathematical model verified by experimental test results was used to study the propagation of viral aerosol particles in the enclosed space under different air conditioning systems. The result showed that when the transverse strong air flow is generated in the room, the concentration distribution of virus particles will show a roll like distribution and the personnel inside the roll will cause new infection. The air flow generated by the air conditioning system will affect the dispersion of droplets in the air. Evaluating and guiding the air flow to avoid blowing air from one person to another may reduce the risk.</p></div>","PeriodicalId":7718,"journal":{"name":"Aerobiologia","volume":"39 4","pages":"429 - 439"},"PeriodicalIF":2.2,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135407439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Meteorological influences on airborne pollen and spores in Johannesburg (Gauteng), South Africa","authors":"Linus B. Ajikah,&nbsp;Sarah J. Roffe,&nbsp;Frank H. Neumann,&nbsp;Marion K. Bamford,&nbsp;Nanike Esterhuizen,&nbsp;Dilys Berman,&nbsp;Jonny Peter","doi":"10.1007/s10453-023-09799-2","DOIUrl":"10.1007/s10453-023-09799-2","url":null,"abstract":"<div><p>Airborne fungal spores and pollen (aerospora), synergistic with air pollution, are key triggers of allergic respiratory diseases. Effective diagnosis and treatment requires up-to-date location-specific knowledge on the temporal variability of aerospora types and levels. Johannesburg is the largest city in South Africa and has grown substantially in three decades, with changes in ground cover, population density and air pollution, yet until now, no continuous aerospora sampling has occurred. We present a daily two-year (August 2019–July 2021) aerospora assemblage for Johannesburg and explore temporal characteristics of 13 dominant aerospora in relation to daily meteorological variables (pressure, rainfall, relative humidity, temperature and wind characteristics). February–July, July–September and January-July represent high-risk periods for fungal spores [(<i>Alternaria alternata</i> (Fries. ex Keissler), Ascospores, <i>Aspergillus niger</i> (Van Tieghem)<i>, Penicillium chrysogenum</i> (Thom), <i>Cladosporium graminum</i> (Corda), <i>Epicoccum nigrum</i> (Link), <i>Helminthosporium solani</i> (Durieu and Montagne) <i>Nigrospora sphaerica</i> (Saccardo ex. Mason), Smuts <i>Ustilago nuda</i><b> (</b>Jensen ex. Rostrup) and <i>Torula herbarum</i> (Link)], trees (<i>Cupressus</i>, <i>Morus</i> and <i>Platanus</i>) and grass (Poaceae), respectively. Using a generalised additive model, results show that daily meteorological characteristics explained 7–32% of daily aerospora variability, with the largest effect on tree pollen. Rainfall, relative humidity and temperature influenced daily fungal spore and Poaceae counts, with moderate/low rainfall (&lt; 20 mm), higher/mid-ranging relative humidity (~ 40–60%) and temperatures of ~ 15–20 °C associated with higher counts during high-risk periods. Rainfall predominantly influenced tree counts during high-risk periods, with higher counts occurring on low rainfall (&lt;10 mm) days. These results update the aerospora profile of Johannesburg, South Africa, providing important information to inform allergy care.</p></div>","PeriodicalId":7718,"journal":{"name":"Aerobiologia","volume":"39 3","pages":"363 - 388"},"PeriodicalIF":2.0,"publicationDate":"2023-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10453-023-09799-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50516596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of exposure to fungi in archives and libraries based on analyses of filter and nasal samples: preliminary investigation","authors":"Marcin Cyprowski,&nbsp;Anna Ławniczek-Wałczyk,&nbsp;Agata Stobnicka-Kupiec,&nbsp;Małgorzata Gołofit-Szymczak,&nbsp;Rafał L. Górny","doi":"10.1007/s10453-023-09798-3","DOIUrl":"10.1007/s10453-023-09798-3","url":null,"abstract":"<div><p>The aim of this study was to characterize the occupational exposure to inhalable dust and airborne fungi among archive and library workers based on qualitative and quantitative analyses of stationary and personal filter samples as well as nasal swabs. The study was carried out in 3 archives and 2 libraries and involved 9 workers of these institutions. Airborne fungi and inhalable dust samples were collected by stationary and personal measurements using filter samplers. Additionally, the nasal swabs from workers were taken after work-shift and microbiologically analysed. The average concentrations of inhalable dust and airborne fungi were 49 µg/m³ (SD = 91) and 299 CFU/m³ (SD = 579), respectively. Both dust and bioaerosol concentrations obtained using personal measurements were significantly higher than that measured by stationary sampling. The correlation analysis showed strong relationships between the concentrations of inhalable dust and airborne fungi (R = 0.57; <i>p</i> &lt; 0.001). The fungal concentrations in swab samples from archive workers (median: 104 CFU/ml) were significantly higher than that in swabs from librarians (median: 1.4 CFU/ml). Among the airborne fungi, the widest spectrum of species was found among <i>Penicillium</i> and <i>Aspergillus</i> (including pathogenic <i>A. fumigatus</i>) genera. However, in samples from archives, yeast-like fungi from <i>Sporidiobolus</i> and <i>Candida</i> (including pathogenic <i>C. albicans</i>) genera predominated among isolated mycobiota. The results of this study revealed that airborne fungi were able to efficiently contaminate the nasal cavity of archive and library employees. The analysis of nasal swabs can be considered as an important analytical tool supporting the assessment of workers’ exposure to bioaerosols.</p></div>","PeriodicalId":7718,"journal":{"name":"Aerobiologia","volume":"39 4","pages":"415 - 428"},"PeriodicalIF":2.2,"publicationDate":"2023-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10453-023-09798-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135965623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A real-time calibration method for the numerical pollen forecast model COSMO-ART","authors":"Simon Adamov,&nbsp;Andreas Pauling","doi":"10.1007/s10453-023-09796-5","DOIUrl":"10.1007/s10453-023-09796-5","url":null,"abstract":"<div><p>Technologies for monitoring pollen concentrations in real-time made substantial advances in the past years and become increasingly available. This opens the possibility to calibrate numerical pollen forecast models in real-time and make a significant step forward regarding the quality of pollen forecasts. We present a method to use real-time pollen measurements in numerical pollen forecast models. The main idea is to calibrate model parameterizations and not to assimilate measurements in a nudging sense. This ensures that the positive effect persists throughout the forecast period and does not vanish after a few forecast hours. We propose to adapt in real-time both the model phenology scheme and the overall tuning factor that are present in any numerical pollen forecast model. To test this approach, we used the numerical pollen forecast model COSMO-ART (COnsortium for Small-scale MOdelling-Aerosols and Reactive Trace gases) on a mesh size of 1.1 km covering the greater Alpine domain. Test runs covered two pollen seasons and included <i>Corylus</i>, <i>Alnus</i>, <i>Betula</i> and Poaceae pollen. Comparison with daily measurements from 13 Swiss pollen stations revealed that the model improvements are large, but fine-tuning of the method remains a challenge. We conclude that the presented approach is a first valuable step towards comprehensive real-time calibration of numerical pollen forecast models.</p></div>","PeriodicalId":7718,"journal":{"name":"Aerobiologia","volume":"39 3","pages":"327 - 344"},"PeriodicalIF":2.0,"publicationDate":"2023-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10453-023-09796-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50476932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The contribution of aphids (Aphidoidea) to atmospheric concentrations of Alternaria and Cladosporium spores","authors":"Donát Magyar,&nbsp;Przemysław Strażyński,&nbsp;Łukasz Grewling,&nbsp;Catherine H. Pashley,&nbsp;Jack Satchwell,&nbsp;János Bobvos,&nbsp;Márta Ladányi","doi":"10.1007/s10453-023-09797-4","DOIUrl":"10.1007/s10453-023-09797-4","url":null,"abstract":"<div><p>Honeydew extracted by aphids serves as nutrient for the development of sooty moulds. Hypothetically, population dynamics of aphids should therefore have an effect on the airborne levels of the spores of fungi colonizing honeydew. In this study, the effects of seven aphid taxa on <i>Alternaria</i> and <i>Cladosporium</i> spore seasons (both pathogenic and allergenic fungi) were analysed on a total of 20-year-long dataset in Kecskemét (Hungary), Leicester (UK) and Poznań (Poland). Meteorological factors strongly effected both aphid and fungal populations. In most cases, a direct effect of weather on fungal levels were found. Direct effect of two aphid species, <i>Acyrthosiphon pisum</i> and <i>Euceraphis punctipennis,</i> on the atmospheric concentration of <i>Alternaria</i> spores was identified in Leicester and Poznań in June and July respectively. Other aphid species had secondary, but significant effects during other time periods. This suggests aphid population data can be informative in predicting airborne concentrations of <i>Alternaria</i> and <i>Cladosporium</i> spores.</p><h3>Graphical abstract</h3>\u0000 <div><figure><div><div><picture><source><img></source></picture></div></div></figure></div>\u0000 </div>","PeriodicalId":7718,"journal":{"name":"Aerobiologia","volume":"39 3","pages":"345 - 361"},"PeriodicalIF":2.0,"publicationDate":"2023-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10453-023-09797-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50504523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The contribution of aphids (Aphidoidea) to atmospheric concentrations of Alternaria and Cladosporium spores","authors":"D. Magyar, Przemysław Strażyński, Ł. Grewling, C. Pashley, J. Satchwell, J. Bobvos, M. Ladányi","doi":"10.1007/s10453-023-09797-4","DOIUrl":"https://doi.org/10.1007/s10453-023-09797-4","url":null,"abstract":"","PeriodicalId":7718,"journal":{"name":"Aerobiologia","volume":"39 1","pages":"345 - 361"},"PeriodicalIF":2.0,"publicationDate":"2023-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"52178718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}