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Aerosols

Karimzadeh, S., Bhopal, R., et al. 2020. “Review of Infective Dose, Routes of Transmission, and Outcome of COVID-19 Caused by the SARS-CoV-2 Virus: Comparison with Other Respiratory Viruses.” Preprints 2020, 2020070613

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is pandemic. Prevention and control strategies require an improved understanding of SARS-CoV-2 dynamics. We did a rapid review of the literature on SARS-CoV-2 viral dynamics with a focus on infective dose. We sought comparisons of SARS-CoV-2 with other respiratory viruses including SARS-CoV-1 and MERS-CoV. We examined laboratory animal, […]

Belosi, F., Conte, M., et al. 2020. “On the concentration of SARS-CoV-2 in outdoor air and the interaction with pre-existing atmospheric particles.” Environmental Research, Volume 193, 2021, 110603.

The spread of SARS-CoV-2 by contact (direct or indirect) is widely accepted, but the relative importance of airborne transmission is still controversial. Probability of outdoor airborne transmission depends on several parameters, still rather uncertain: virus-laden aerosol concentrations, viability and lifetime, minimum dose necessary to transmit the disease. In this work, an estimate of outdoor concentrations […]

Kwon, K.S., Park, J.I., et al. 2020. “Evidence of Long-Distance Droplet Transmission of SARS-CoV-2 by Direct Air Flow in a Restaurant in Korea.” Journal of Korean Medical Science, 2020 Nov;35(46):e415.

BackgroundThe transmission mode of severe acute respiratory syndrome coronavirus 2 is primarily known as droplet transmission. However, a recent argument has emerged about the possibility of airborne transmission. On June 17, there was a coronavirus disease 2019 (COVID-19) outbreak in Korea associated with long distance droplet transmission. MethodsThe epidemiological investigation was implemented based on personal […]

ARTICLE: “Airborne Transmission of COVID-19: Aerosol Dispersion, Lung Deposition, and Virus-Receptor Interactions”

“Airborne Transmission of COVID-19: Aerosol Dispersion, Lung Deposition, and Virus-Receptor Interactions” Yi Y. Zuo, William E. Uspal, and Tao Wei American Chemical Society Nano 2020, 14, 12, 16502–16524, November 25, 2020 https://doi.org/10.1021/acsnano.0c08484 FULL TEXT (PDF): https://pubs.acs.org/doi/pdf/10.1021/acsnano.0c08484 Abstract Coronavirus disease 2019 (COVID-19), due to infection by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is now […]

ARTICLE: “The perspective of fluid flow behavior of respiratory droplets and aerosols through the facemasks in context of SARS-CoV-2”

“The perspective of fluid flow behavior of respiratory droplets and aerosols through the facemasks in context of SARS-CoV-2” Sanjay Kumar and Heow Pueh Lee Physics of Fluids 32, 111301 (2020) https://doi.org/10.1063/5.0029767 ABSTRACT In the unfortunate event of the current ongoing pandemic COVID-19, where vaccination development is still in the trial phase, several preventive control measures […]

LETTER: “Ventilation not Ventilators”

https://assets.documentcloud.org/documents/20417299/ventilation-not-ventilators-an-open-letter-nov-24-3.pdf November 24, 2020 Hon. Christine Elliott Deputy Premier of Ontario, Ontario Minister of Health and Long-Term Care Dr. David Williams, MD, MHSc, FRCPS Chief Medical Officer of Health, Ministry of Health and Long-Term Care Dr. Brian Schwartz, MD, MScCh Vice-President, Public Health Ontario Dear Hon. Christine Elliott, Dr. David Williams and Dr. Brian Schwartz, […]

Nissen, Karolina, Janina Krambrich, et al. 2020. “Long-distance airborne dispersal of SARS-CoV-2 in COVID-19 wards.” Scientific Reports, Volume 10, Article 19589

Evidence suggests that SARS-CoV-2, as well as other coronaviruses, can be dispersed and potentially transmitted by aerosols directly or via ventilation systems. We therefore investigated ventilation openings in one COVID-19 ward and central ducts that expel indoor air from three COVID-19 wards at Uppsala University Hospital, Sweden, during April and May 2020. Swab samples were […]

“Canada quietly updates COVID-19 guidelines on risk of airborne spread”

“Canada quietly updates COVID-19 guidelines on risk of airborne spread” Adam Miller · CBC News · Nov 04, 2020 https://www.cbc.ca/news/health/coronavirus-canada-aerosol-transmission-covid-19-1.5789906 Canada has quietly revised its guidelines on how COVID-19 spreads to include the risk of aerosol transmission, weeks after other countries and international health organizations acknowledged the airborne threat of the coronavirus. The Public Health […]

Lednicky, John A., Michael Lauzardo, et. al. 2020. “Viable SARS-CoV-2 in the air of a hospital room with COVID-19 patients” International Journal of Infectious Diseases. Volume 100, pages 476-482.

Objectives: Because the detection of SARS-CoV-2 RNA in aerosols but failure to isolate viable (infectious) virus are commonly reported, there is substantial controversy whether severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) can be transmitted through aerosols. This conundrum occurs because common air samplers can inactivate virions through their harsh collection processes. We sought to resolve […]

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