Browsing 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 chemical, biological and radiological environment in the Arctic World Archive
Skogan, Gunnar; Bøifot, Kari Oline; Orr, Russell John Scott; Dybwad, Marius; Enger, Elin; Bunkan, Arne Joakim Coldevin; Gohli, Jostein (2022-12-16)This report describes the characterization of the chemical, biological and radiological environment in a decommissioned coal mine (Mine 3) on Svalbard, where the Artic World Archive (AWA), established by Piql and Store ... -
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 ... -
Dekontaminering av åndedrettsvern med hydrogenperoksiddamp - prinsipper, teknologier og systemer
Moen, Line Victoria; Fykse, Else Marie; Dybwad, Marius (2020-06-24)Tilstrekkelig tilgang på smittevernutstyr er en forutsetning for at helsevesenet skal fungere og kunne løse de utfordringer de står overfor i en pandemisituasjon. Under den pågående koronapandemien har stabil tilgang på ... -
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, ... -
Efficacy of face masks as source control and respiratory protection against transmission of SARS-CoV-2
Dybwad, Marius; Fykse, Else Marie; Gjesdal, Thor; Gorzkowska-Sobas, Agnieszka Anna; Helgeland, Anders; Åkervik, Espen (2021-06-25)During the COVID-19 pandemic, medical and community face masks have been used extensively by health care workers and the general public to reduce transmission of the SARSCoV-2 virus. This report reviews the available ... -
Experimental snapshot of cultivable airborne bacteria at a Czech subway station
Dybwad, Marius; Bílek, Karel; Andêlová, Hana; Brínek, Josef (2017-06-26)Monitoring systems for rapid airborne biothreat detection experience performance degradation in environments with a complex, dynamic bioaerosol background. Knowledge about bioaerosol backgrounds may therefore help improve ... -
FFIs støtte til sivile helsemyndigheter under koronapandemien - kvalitetskontroll av smittevernutstyr
Blatny, Janet Martha; Breivik, Hanne; Dybwad, Marius; Bergaust, Julie Celine (2021-05-21)Rapporten beskriver hvordan Forsvarets forskningsinstitutt (FFI) støttet norske helsemyndigheter under koronapandemien i 2020–2021 og instituttets evne og kapasitet til å håndtere en tilsvarende fremtidig krise. 30. ... -
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 ... -
Luftbåren smitte av virale luftveisinfeksjoner fra et aerosolfysisk perspektiv
Åkervik, Espen; Fossum, Hannibal E.; Dybwad, Marius; Helgeland, Anders (2020-06-16)Luftbåren smitte foregår gjennom at infeksiøst materiale følger med dråper av ulik størrelse ut fra verten gjennom respiratoriske aktiviteter som pust, tale, sang, host eller nys. For de vanlige aktivitetene som pusting, ... -
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 ... -
Sampling efficiency and nucleic acid stability during long-term sampling with different bioaerosol samplers
Bøifot, Kari Oline; Skogan, Gunnar; Dybwad, Marius (2024-05-25)Aerosol microbiome studies have received increased attention as technological advancements have made it possible to dive deeper into the microbial diversity. To enhance biomass collection for metagenomic sequencing, long-term ...