Browsing Articles by Author "Dybwad, Marius"
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Characterization of airborne bacteria at an underground subway station
Dybwad, Marius; Granum, Per Einar; Bruheim, Per; Blatny, Janet Martha (2012)The reliable detection of airborne biological threat agents depends on several factors, including the performance criteria of the detector and its operational environment. One step in improving the detector's performance ... -
Characterization of the public transit air microbiome and resistome reveals geographical specificity
Leung, Michael K.H.; Tong, X.; Bøifot, Kari Oline; Bezdan, Daniela; Butler, Daniel J.; Danko, David C.; Gohli, Jostein; Green, Caroline; Hernandez, Mark T.; Kelly, Frank J.; Levy, Shawn; Mason-Buck, Gabriela; Nieto-Caballero, Marina; Syndercombe-Court, Denise; Udekwu, Klas I.; Young, Benjamin G.; Mason, Christopher E.; Dybwad, Marius; Lee, Patrick K.H. (2021-05-26)Background The public transit is a built environment with high occupant density across the globe, and identifying factors shaping public transit air microbiomes will help design strategies to minimize the transmission of ... -
Comparative testing and evaluation of nine different air samplers: End-to-end sampling efficiencies as specific performance measurements for bioaerosol applications
Dybwad, Marius; Skogan, Gunnar; Blatny, Janet Martha (2014)Accurate exposure assessments are needed to evaluate health hazards caused by airborne microorganisms and require air samplers that efficiently capture representative samples. This highlights the need for samplers with ... -
Complete genome sequences of six Legionella pneumophila isolates from two collocated outbreaks of legionnaires' disease in 2005 and 2008 in Sarpsborg/Fredrikstad, Norway
Dybwad, Marius; Aarskaug, Tone; Fykse, Else-Marie; Madslien, Elisabeth Henie; Blatny, Janet Martha (2016)Here, we report the complete genome sequences of Legionella pneumophila isolates from two collocated outbreaks of Legionnaires’ disease in 2005 and 2008 in Sarpsborg/Fredrikstad, Norway. One clinical and two environmental ... -
Dispersion of SARS-CoV-2 in air surrounding COVID-19-infected individuals with mild symptoms
Gohli, Jostein; Anderson, Ane Marie; Brantsæter, Arne Broch; Bøifot, Kari Oline; Grub, Carola; Lund, Cathrine; Lind, Andreas; Pettersen, Ellen; Søraas, Arne Vasli; Dybwad, Marius (2022-02-12)Since the beginning of the pandemic, the transmission modes of SARS-CoV-2—particularly the role of aerosol transmission—have been much debated. Accumulating evidence suggests that SARS-CoV-2 can be transmitted by aerosols, ... -
A global metagenomic map of urban microbiomes and antimicrobial resistance
Danko, David; Bezdan, Daniela; Afshin, Evan E.; Ahsanuddin, Sofia; Bhattacharya, Chandrima; Butler, Daniel J.; Chng, Kern Rei; Donnellan, Daisy; Hecht, Jochen; Jackson, Katelyn; Kuchin, Katerina; Karasikov, Mikhail; Lyons, Abigail; Mak, Lauren; Meleshko, Dmitry; Mustafa, Harun; Mutai, Beth; Neches, Russell Y.; Ng, Amanda; Nikolayeva, Olga; Nikolayeva, Tatyana; Png, Eileen; Ryon, Krista A.; Sanchez, Jorge L.; Shaaban, Heba; Sierra, Maria A.; Thomas, Dominique; Young, Ben; Abudayyeh, Omar O.; Alicea, Josue; Bhattacharyya, Malay; Blekhman, Ran; Castro-Nallar, Eduardo; Cañas, Ana M.; Chatziefthimiou, Aspassia D.; Crawford, Robert W.; De Filippis, Francesca; Deng, Youping; Desnues, Christelle; Dias-Neto, Emmanuel; Dybwad, Marius; Elhaik, Eran; Ercolini, Danilo; Frolova, Alina; Gankin, Dennis; Gootenberg, Jonathan S.; Graf, Alexandra B.; Green, Caroline; Hajirasouliha, Iman; Hastings, Jaden J.A.; Hernandez, Mark; Iraola, Gregorio; Jang, Soojin; Kahles, Andre; Kelly, Frank J.; Knights, Kaymisha; Kyrpides, Nikos; Łabaj, Paweł P.; Lee, Patrick K.H.; Leung, Marcus H.Y.; Ljungdahl, Per O.; Mason-Buck, Gabriella; McGrath, Ken; Meydan, Cem; Mongodin, Emmanuel F.; Moraes, Milton Ozorio; Nagarajan, Niranjan; Nieto-Caballero, Marina; Noushmehr, Houtan; Oliveira, Manuela; Ossowski, Stephan; Osuolale, Olayinka O.; Özcan, Orhan; Paez-Espino, David; Rascovan, Nicolás; Richard, Hugues; Rätsch, Gunnar; Schriml, Lynn M.; Semmler, Torsten; Sezerman, Osman U.; Shi, Leming; Shi, Tieliu; Siam, Rania; Song, Le Huu; Suzuki, Haruo; Court, Denise Syndercombe; Tighe, Scott W.; Tong, Xinzhao; Udekwu, Klas I.; Ugalde, Juan A.; Valentine, Brandon; Vassilev, Dimitar I.; Vayndorf, Elena M.; Velavan, Thirumalaisamy P.; Wu, Jun; Zambrano, María M.; Zhu, Jifeng; Zhu, Sibo; Mason, Christopher E. (2021-06-24)We present a global atlas of 4,728 metagenomic samples from mass-transit systems in 60 cities over 3 years, representing the first systematic, worldwide catalog of the urban microbial ecosystem. This atlas provides an ... -
Identification of airborne bacteria by 16S rDNA sequencing, MALDI-TOF MS and the MIDI microbial identification system
Fykse, Else-Marie; Tjärnhage, Torbjörn; Humppi, Tarmo; Eggen, Vilde Sørvik; Ingebretsen, André; Skogan, Gunnar; Olofsson, Göran; Wästerby, Pär; Gradmark, Per-Åke; Larsson, Anders; Dybwad, Marius; Blatny, Janet Martha (2015)The aim of this study was to collect and identify airborne bacteria in Norway, Sweden and Finland and to compare three different technologies for identifying collected airborne bacterial isolates: the “gold standard” method ... -
Large scale MALDI-TOF MS based taxa identification to identify novel pigment producers in a marine bacterial culture collection
Stafsnes, Marit Hallvardsd; Dybwad, Marius; Brunsvik, Anders; Bruheim, Per (2013)A challenge in the rational exploitation of microbial culture collections is to avoid superfluous testing of replicas. MALDI-TOF MS has been shown to be an efficient dereplication tool as it can be used to discriminate ... -
Microbial community structure in a full-scale anaerobic treatment plant during start-up and first year of operation revealed by high-throughput 16S rRNA gene amplicon sequencing
Fykse, Else-Marie; Aarskaug, Tone; Madslien, Elisabeth Henie; Dybwad, Marius (2016)High-throughput amplicon sequencing of six biomass samples from a full-scale anaerobic reactor at a Norwegian wood and pulp factory using Biothane Biobed Expanded Granular Sludge Bed (EGSB) technology during start-up and ... -
Performance evaluation of a new custom,multi-component DNA isolation methodoptimized for use in shotgun metagenomicsequencing-based aerosol microbiomeresearch
Bøifot, Kari Oline; Gohli, Jostein; Moen, Line Victoria; Dybwad, Marius (2020-01-13) -
Performance evaluation of high-volume electret filter air samplers in aerosol microbiome research
Gohli, Jostein; Dybwad, Marius; Skogan, Gunnar (2020)Background Reliable identification and quantification of bioaerosols is fundamental in aerosol microbiome research, highlighting the importance of using sampling equipment with well-defined performance characteristics. ... -
Quantification of aerosol dispersal from suspected aerosol-generating procedures
Strand-Amundsen, Runar James; Tronstad, Christian; Elvebakk, Ole; Martinsen, Tormod; Dybwad, Marius; Lingaas, Egil; Tønnessen, Tor Inge (2021-12-06)Background Oxygen-delivering modalities like humidified high-flow nasal cannula (HFNC) and noninvasive positive-pressure ventilation (NIV) are suspected of generating aerosols that may contribute to transmission of disease ... -
Rapid Identification of Bacillus anthracis Spores in Suspicious Powder Samples by Using Matrix-Assisted Laser Desorption Ionization-Time of Flight Mass Spectrometry (MALDI-TOF MS)
Dybwad, Marius; van der Laaken, AL; Blatny, Janet Martha; Paauw, Armand (2013)Rapid and reliable identification of Bacillus anthracis spores in suspicious powders is important to mitigate the safety risks and economic burdens associated with such incidents. The aim of this study was to develop and ... -
SARS-CoV-2 in the Air Surrounding Patients during Nebulizer Therapy
Gohli, Jostein; Brantsæter, Arne Broch; Bøifot, Kari Oline; Grub, Carola; Granerud, Beathe Kiland; Holter, Jan Cato; Dyrhol-Riise, Anne Ma; Smedholen, Madelen Foss; Dybwad, Marius (2022-09-17)Nebulizer therapy is commonly used for patients with obstructive pulmonary disease or acute pulmonary infections with signs of obstruction. It is considered a “potential aerosol-generating procedure,” and the risk of disease ... -
The subway microbiome: Seasonal dynamics and direct comparison of air and surface bacterial communities
Gohli, Jostein; Bøifot, Kari Oline; Moen, Line Victoria; Pastuszek, Paulina; Skogan, Gunnar; Udekwu, Klas I; Dybwad, Marius (2019-12-19)Background Mass transit environments, such as subways, are uniquely important for transmission of microbes among humans and built environments, and for their ability to spread pathogens and impact large numbers of people. ... -
Temporal variability of the bioaerosol background at a subway station: Concentration level, size distribution, and diversity of airborne bacteria
Dybwad, Marius; Skogan, Gunnar; Blatny, Janet Martha (2014)Naturally occurring bioaerosol environments may present a challenge to biological detection-identification-monitoring (BIODIM) systems aiming at rapid and reliable warning of bioterrorism incidents. One way to improve the ...