Characteristics of airborne opportunistic pathogenic bacteria during autumn and winter in Xi'an, China

Fan, Chunlan; Li, Yan-peng; Liu, Pengxia; Mu, Feifei; Xie, Zhenglei; Lü, Rui; Qi, Yuzhen; Wang, Beibei; Cheng, Jin M.

doi:10.1016/j.scitotenv.2019.03.412

Cited by 70 publications

(38 citation statements)

References 63 publications

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“…This is in agreement with other studies showing a large influence of season (Bertolini et al, 2013;Gandolfi et al, 2015;Genitsaris et al, 2017;Lee et al, 2017;Maron et al, 2006;Woo et al, 2013). Although urbanized areas are more homogeneous in microbial composition than rural areas (Barberán et al, 2015), local sources and fine scale characteristics of the sampling site, such as plant cover, play an important role in explaining short-term variability in nearby urban locations (Fan et al, 2019;Mhuireach et al, 2016Mhuireach et al, , 2019. Therefore, we cannot rule out the influence of these local factors in our samples, which may be obscured by the effects of week-long and seasonal sampling.…”

Section: Seasonal Factors Shape Species Communitiessupporting

confidence: 92%

“…In addition to allergenic pollen and harmless microorganisms, the air may transport human pathogens, especially those causing respiratory diseases (Abd Aziz et al, 2018;Be et al, 2015;Cao et al, 2014;Fan et al, 2019;Kowalski and Bahnfleth, 1998). Although with much lower abundance than soil and leaf surface bacteria, a total of 39 bacterial genera (596 OTUs) with pathogenic representatives were found in our samples and compiled in Table 3.…”

Section: Potential Pathogenic Bacteria and Fungi Are Present In Urbanmentioning

confidence: 99%

“…1a-b). Recently, Fan et al (2019) showed a strong association between the proportion of pathogenic bacteria and particulate matter (PM). We notice that the concentration of PM 10 particles is significantly higher during our Summer and Fall sampling periods (Table 1).…”

Section: Potential Pathogenic Bacteria and Fungi Are Present In Urbanmentioning

confidence: 99%

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Temporal patterns of variability for prokaryotic and eukaryotic diversity in the urban air of Madrid (Spain)

Núñez

Paz

Rastrojo

et al. 2019

Atmospheric Environment

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Although many microorganisms are ubiquitously present in the air, airborne microbial communities have been much less characterized than those in soil or aquatic environments. Besides its ecological importance, detection and monitoring of the wide diversity of these aerosolized microorganisms (bacteria, viruses, fungi and pollen) is relevant for understanding allergy and disease outbreaks, especially in highly populated cities. In this study, we describe the simultaneous biodiversity of bacteria, fungi and plants present in the urban atmosphere of Madrid (Spain) along different seasonal periods, using DNA sequencing. Sampling in two different locations (downtown and peri-urban) we found that changes in the composition of each community are mainly driven by environmental factors, rather than by the features of the specific sampling microenvironments. While pollen particles are dominated by a few taxa characteristic of each season, bacteria and fungi show a high diversity but stable core communities along the year. The prokaryotic core is governed by soil and leaf surface bacteria, with predominance of Actinobacteria (Frankiales and Micrococcales) and Alphaproteobacteria (Sphingomonadales, Rhodobacterales, Rhizobiales and Acetobacterales). Fungal diversity is characterized by the steady presence of members of Capnodiales and Pleosporales. Pathogenic bacterial and fungal taxa were also detected across the year. We also correlated the airborne biodiversity with environmental variables. Air temperature has a strong influence on the community composition of bacteria, while pollen and fungi seasonal variations are mainly correlated with precipitation. Our results contribute to the characterization of airborne prokaryotic and eukaryotic communities in urban areas and show the suitability of this method for biosurveillance strategies.

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Section: Seasonal Factors Shape Species Communitiessupporting

confidence: 92%

Section: Potential Pathogenic Bacteria and Fungi Are Present In Urbanmentioning

confidence: 99%

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Temporal patterns of variability for prokaryotic and eukaryotic diversity in the urban air of Madrid (Spain)

Núñez

Paz

Rastrojo

et al. 2019

Atmospheric Environment

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“…The main goals of our study were 1) to optimize a robust and practical community exposure bioaerosol surveillance strategy in outdoor environments with poor sanitation and 2) explore if these bioaerosols are relevant at personal exposure levels (~3-13 L air /min (EPA, 2011)) in such contexts. We conducted this study testing different sampling methods to characterize the fate and transport of sanitation-related bioaerosols during both the rainy and dry seasons in La Paz, Bolivia in 2019, as seasonal effects on aerosolized pathogenic microorganisms have been observed (Fan et al, 2019;Lu et al, 2019). We evaluated multiple environmental factors to explore their impact upon bioaerosols in real-world scenarios using low-cost instrumentation, identifying the key parameters to be included in future context-specific risk assessments and surveillance efforts.…”

Section: Introductionmentioning

confidence: 99%

Bioaerosol sampling optimization for community exposure assessment in cities with poor sanitation: A one health cross-sectional study

Rocha-Melogno

Ginn

Bailey

et al. 2020

Science of The Total Environment

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“…It is well established that anthropogenic activities affect the concentration and characteristics of bacterial population present in a given region 8 . Increase in population and related activities, and degradation of air quality leads to atmospheric pollution by increasing bacterial concentration 9 . According to a recent report, degradation of air quality with consequences for health and hygiene is becoming serious problem in India 10 .…”

Section: Introductionmentioning

confidence: 99%

Study on Air Bacteria at Different Altitudinal Locations in Tezpur to Tawang Axis

et al. 2020

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Microflora plays an important role in modulating environmental quality. Among microflora, bacteria are omnipresent in the environment. Pathogenic bacteria, present in air, are known to affect significantly the health and well-being of human, animal or plant populations. Air bacteria monitoring is thus essential for surveillance of pathogenic microorganisms from public health perspective besides its significant implications in detection and mitigation of biothreat related issues. Despite the geo-politically strategic importance of northeast India, there is scarcity of data on human health and disease surveillance. Considering these facts, we, for the first time studied the bacterial diversity of air at six important sites adjacent to the international border in the northeast region of India, having an altitude range of 73 m (Tezpur) to 4170 m (Sela Pass) above sea level. Standard microbiological techniques, such as Tryptone Soya Agar, Mannitol salt and McConkey agar strips and plates were used for air bacterial load assessment and culture for subsequent analysis using biochemical and molecular techniques. Following RFLP study, twenty six different bacterial colonies were isolated. Subsequently, bacteria identification was carried out by examining the substrate utilisation patterns, sequencing 16S rRNA gene and phylogenetic analysis. Results of the study reveal that the isolates mostly belong to two genera Bacillus and Staphylococcus (eleven in each genus), along with Micrococcus, Pseduomonas and Acinetobacter. Based on significant match of our sequences with that of medically important bacterial 16S rRNA sequences available at 16SpathDB 2.0 and review of available literature, we found that a number of these bacterial species have the pathogenic potential. In this manuscript we report our results and discuss the importance of air bacterial surveillance from the perspective of human health, hygiene and biothreat mitigation.

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Characteristics of airborne opportunistic pathogenic bacteria during autumn and winter in Xi'an, China

Cited by 70 publications

References 63 publications

Temporal patterns of variability for prokaryotic and eukaryotic diversity in the urban air of Madrid (Spain)

Temporal patterns of variability for prokaryotic and eukaryotic diversity in the urban air of Madrid (Spain)

Bioaerosol sampling optimization for community exposure assessment in cities with poor sanitation: A one health cross-sectional study

Study on Air Bacteria at Different Altitudinal Locations in Tezpur to Tawang Axis

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