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  1. AU="Nathalie Turgeon"
  2. AU="Santos, Bryan" AU="Santos, Bryan"
  3. AU="Platanios, Emmanouil Antonios"
  4. AU="Havva Keskin"
  5. AU="Gomis, Susantha"
  6. AU="Castro, Vanda"
  7. AU="Josiah, S M"
  8. AU="Yanjun Guo"
  9. AU="Klapp, Sabine H L"
  10. AU="Cipolat, Lauriane"
  11. AU="Rhee, Hwanseok"
  12. AU="El-Khatabi, K"
  13. AU="Lee, Seung Hee"
  14. AU=Torres Antoni
  15. AU="Baldacini, Mathieu"
  16. AU="Stahl, Alexander"
  17. AU="Karimbumkara, Seena Narayanan"
  18. AU="Welz Mirosław"
  19. AU="Jintao Ding"
  20. AU="Mei-Fang Chen"

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  1. Artikel ; Online: Ozone inactivation of airborne influenza and lack of resistance of respiratory syncytial virus to aerosolization and sampling processes.

    Marie-Eve Dubuis / Étienne Racine / Jonathan M Vyskocil / Nathalie Turgeon / Christophe Tremblay / Espérance Mukawera / Guy Boivin / Nathalie Grandvaux / Caroline Duchaine

    PLoS ONE, Vol 16, Iss 7, p e

    2021  Band 0253022

    Abstract: Influenza and RSV are human viruses responsible for outbreaks in hospitals, long-term care facilities and nursing homes. The present study assessed an air treatment using ozone at two relative humidity conditions (RHs) in order to reduce the infectivity ... ...

    Abstract Influenza and RSV are human viruses responsible for outbreaks in hospitals, long-term care facilities and nursing homes. The present study assessed an air treatment using ozone at two relative humidity conditions (RHs) in order to reduce the infectivity of airborne influenza. Bovine pulmonary surfactant (BPS) and synthetic tracheal mucus (STM) were used as aerosols protectants to better reflect the human aerosol composition. Residual ozone concentration inside the aerosol chamber was also measured. RSV's sensitivity resulted in testing its resistance to aerosolization and sampling processes instead of ozone exposure. The results showed that without supplement and with STM, a reduction in influenza A infectivity of four orders of magnitude was obtained with an exposure to 1.70 ± 0.19 ppm of ozone at 76% RH for 80 min. Consequently, ozone could be considered as a virucidal disinfectant for airborne influenza A. RSV did not withstand the aerosolization and sampling processes required for the use of the experimental setup. Therefore, ozone exposure could not be performed for this virus. Nonetheless, this study provides great insight for the efficacy of ozone as an air treatment for the control of nosocomial influenza A outbreaks.
    Schlagwörter Medicine ; R ; Science ; Q
    Thema/Rubrik (Code) 290
    Sprache Englisch
    Erscheinungsdatum 2021-01-01T00:00:00Z
    Verlag Public Library of Science (PLoS)
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  2. Artikel ; Online: Ozone efficacy for the control of airborne viruses

    Marie-Eve Dubuis / Nathan Dumont-Leblond / Camille Laliberté / Marc Veillette / Nathalie Turgeon / Julie Jean / Caroline Duchaine

    PLoS ONE, Vol 15, Iss 4, p e

    Bacteriophage and norovirus models.

    2020  Band 0231164

    Abstract: This study was designed to test the efficacy of an air treatment using ozone and relative humidity (RH) for the inactivation of airborne viruses. Four phages (φX174, PR772, MS2 and φ6) and one eukaryotic virus (murine norovirus MNV-1) were exposed to low ...

    Abstract This study was designed to test the efficacy of an air treatment using ozone and relative humidity (RH) for the inactivation of airborne viruses. Four phages (φX174, PR772, MS2 and φ6) and one eukaryotic virus (murine norovirus MNV-1) were exposed to low ozone concentrations (1.23 ppm for phages and 0.23 ppm for MNV-1) and various levels of RH for 10 to 70 minutes. The inactivation of these viruses was then assessed to determine which of the tested conditions provided the greatest reduction in virus infectivity. An inactivation of at least two orders of magnitude for φX174, MS2 and MNV-1 was achieved with an ozone exposure of 40 minutes at 85% RH. For PR772 and φ6, exposure to the reference condition at 20% RH for 10 minutes yielded the same results. These findings suggest that ozone used at a low concentration is a powerful disinfectant for airborne viruses when combined with a high RH. Air treatment could therefore be implemented inside hospital rooms ventilated naturally.
    Schlagwörter Medicine ; R ; Science ; Q
    Sprache Englisch
    Erscheinungsdatum 2020-01-01T00:00:00Z
    Verlag Public Library of Science (PLoS)
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  3. Artikel ; Online: Resistance of Aerosolized Bacterial Viruses to Four Germicidal Products.

    Nathalie Turgeon / Kevin Michel / Thi-Lan Ha / Enric Robine / Sylvain Moineau / Caroline Duchaine

    PLoS ONE, Vol 11, Iss 12, p e

    2016  Band 0168815

    Abstract: Viral diseases can spread through a variety of routes including aerosols. Yet, limited data are available on the efficacy of aerosolized chemicals to reduce viral loads in the air. Bacteriophages (phages) are often used as surrogates for hazardous ... ...

    Abstract Viral diseases can spread through a variety of routes including aerosols. Yet, limited data are available on the efficacy of aerosolized chemicals to reduce viral loads in the air. Bacteriophages (phages) are often used as surrogates for hazardous viruses in aerosol studies because they are inexpensive, easy to handle, and safe for laboratory workers. Moreover, several of these bacterial viruses display physical characteristics similar to pathogenic human and animal viruses, like morphological size, type of nucleic acids, capsid morphology, and the presence of an envelope. In this study, the efficacy of four chemicals was evaluated on four airborne phages at two different relative humidity levels. Non-tailed bacteriophages MS2 (single-stranded RNA), ϕ6 (double-stranded RNA, enveloped), PR772 (double-stranded DNA), and ϕX174 (single-stranded DNA) were first aerosolized in a 55L rotative environmental chamber at 19°C with 25% and 50% relative humidity. Then, hydrogen peroxide, Eugenol (phenylpropene used in commercial perfumes and flavorings), Mist® (automobile disinfectant containing Triethylene glycol), and Pledge® (multisurface disinfectant containing Isopropanol, n-Alkyl Dimethyl Benzyl Amonium Chlorides, and n-Alkyl Dimethyl Ethylbenzyl Ammonium Chloride) were nebulized with the phages using a separate nebulizer. Aerosols were maintained in suspension during 10 minutes, 1 hour, and 2 hours. Viral aerosols were sampled using an SKC BioSampler and samples were analyzed using qPCR and plaque assays. The resistance levels of the four phages varied depending on the relative humidity (RH) and germicidal products tested. Phage MS2 was the most stable airborne virus under the environmental conditions tested while phage PR772 was the least stable. Pledge® and Eugenol reduced the infectivity of all airborne phages tested. At 25% RH, Pledge® and Eugenol were more effective at reducing infectivity of RNA phages ϕ6 and MS2. At 50% RH, Pledge® was the most effective agent against phage MS2. These findings illustrate that ...
    Schlagwörter Medicine ; R ; Science ; Q
    Thema/Rubrik (Code) 500
    Sprache Englisch
    Erscheinungsdatum 2016-01-01T00:00:00Z
    Verlag Public Library of Science (PLoS)
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  4. Artikel ; Online: Design and Validation with Influenza A Virus of an Aerosol Transmission Chamber for Ferrets

    Nathalie Turgeon / Marie-Ève Hamelin / Daniel Verreault / Ariane Lévesque / Chantal Rhéaume / Julie Carbonneau / Liva Checkmahomed / Matthieu Girard / Guy Boivin / Caroline Duchaine

    International Journal of Environmental Research and Public Health, Vol 16, Iss 4, p

    2019  Band 609

    Abstract: Background : The importance of aerosols in the spread of viruses like influenza is still a subject of debate. Indeed, most viruses can also be transmitted through direct contact and droplets. Therefore, the importance of the airborne route in a clinical ... ...

    Abstract Background : The importance of aerosols in the spread of viruses like influenza is still a subject of debate. Indeed, most viruses can also be transmitted through direct contact and droplets. Therefore, the importance of the airborne route in a clinical context is difficult to determine. The aim of this study was to design a chamber system to study the airborne transmission of viruses between ferrets. Methods : A system composed of three chambers connected in series, each one housing one ferret and preventing direct contact, was designed. The chambers were designed to house the ferrets for several days and to study the transmission of viruses from an infected (index) ferret to two naïve ferrets via aerosols and droplets or aerosols only. A particle separator was designed that can be used to modulate the size of the particles traveling between the chambers. The chamber system was validated using standard dust as well as with ferrets infected with influenza A virus. Conclusions : The 50% efficiency cut-off of the separator could be modulated between a 5-µm and an 8-µm aerodynamic diameter. In the described setup, influenza A virus was transmitted through the aerosol route in two out of three experiments, and through aerosols and droplets in all three experiments.
    Schlagwörter bioaerosols ; influenza virus ; ferret animal model ; aerosol chamber ; Medicine ; R
    Thema/Rubrik (Code) 616
    Sprache Englisch
    Erscheinungsdatum 2019-02-01T00:00:00Z
    Verlag MDPI AG
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  5. Artikel ; Online: Bioaerosols and Transmission, a Diverse and Growing Community of Practice

    Samira Mubareka / Nicolas Groulx / Eric Savory / Todd Cutts / Steven Theriault / James A. Scott / Chad J. Roy / Nathalie Turgeon / Elizabeth Bryce / George Astrakianakis / Shelley Kirychuk / Matthieu Girard / Gary Kobinger / Chao Zhang / Caroline Duchaine

    Frontiers in Public Health, Vol

    2019  Band 7

    Abstract: The transmission of infectious microbes via bioaerosols is of significant concern for both human and animal health. However, gaps in our understanding of respiratory pathogen transmission and methodological heterogeneity persist. New developments have ... ...

    Abstract The transmission of infectious microbes via bioaerosols is of significant concern for both human and animal health. However, gaps in our understanding of respiratory pathogen transmission and methodological heterogeneity persist. New developments have enabled progress in this domain, and one of the major turning points has been the recognition that cross-disciplinary collaborations across spheres of human and animal health, microbiology, biophysics, engineering, aerobiology, infection control, public health, occupational health, and industrial hygiene are essential. Collaborative initiatives support advances in topics such as bioaerosol behavior, dispersion models, risk assessment, risk/exposure effects, and mitigation strategies in clinical, experimental, agricultural, and other field settings. There is a need to enhance the knowledge translation for researchers, stakeholders, and private partners to support a growing network of individuals and agencies to achieve common goals to mitigate inter- and intra-species pathogen transmission via bioaerosols.
    Schlagwörter bioaerosols ; microbes ; virus ; infections ; viral dissemination ; network ; Public aspects of medicine ; RA1-1270
    Sprache Englisch
    Erscheinungsdatum 2019-02-01T00:00:00Z
    Verlag Frontiers Media S.A.
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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