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January 2021

Tang, J.W., Bahnfleth, W.P., et al. 2021. “Dismantling myths on the airborne transmission of severe acute respiratory syndrome coronavirus (SARS-CoV-2).” Journal of Hospital Infection, Review Article, January 12, 2021.

The Covid-19 pandemic has caused untold disruption and enhanced mortality rates around the world. Understanding the mechanisms for transmission of SARS-CoV-2 is key to preventing further spread but there is confusion over the meaning of “airborne” whenever transmission is discussed. Scientific ambivalence originates from evidence published many years ago, which has generated mythological beliefs that […]

Lednicky, J.A., Lauzardo, M., et al. 2021. “Isolation of SARS-CoV-2 from the air in a car driven by a COVID patient with mild illness.” medRxiv 2021.01.12.21249603

We used a Sioutas personal cascade impactor sampler (PCIS) to screen for SARS-CoV-2 in a car driven by a COVID-19 patient. SARS-CoV-2 was detectable at all PCIS stages by PCR and was cultured from the section of the sampler collecting particles in the 0.25 to 0.50 μm size range. https://www.medrxiv.org/content/10.1101/2021.01.12.21249603v1 PDF: https://www.medrxiv.org/content/10.1101/2021.01.12.21249603v1.full.pdf

Johansson, M.A., Quandelacy T.M., Kada S., et al. “SARS-CoV-2 Transmission From People Without COVID-19 Symptoms.” JAMA Network Open, 2021;4(1):e2035057.

Question  What proportion of coronavirus disease 2019 (COVID-19) spread is associated with transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) from persons with no symptoms? Findings  In this decision analytical model assessing multiple scenarios for the infectious period and the proportion of transmission from individuals who never have COVID-19 symptoms, transmission from asymptomatic individuals was estimated […]

Lauring, A.S., Hodcroft, E.B., 2021. “Genetic Variants of SARS-CoV-2—What Do They Mean?” JAMA Online. January 06, 2021.

Over the course of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic, the clinical, scientific, and public health communities have had to respond to new viral genetic variants. Each one has triggered a flurry of media attention, a range of reactions from the scientific community, and calls from governments to either “stay calm” or […]

de Erausquin, GA, Snyder, H, Carrillo, M, et al. 2021. “The chronic neuropsychiatric sequelae of COVID‐19: The need for a prospective study of viral impact on brain functioning.” Alzheimer’s & Dementia, 2021; 1– 9.

Introduction The increasing evidence of SARS‐CoV‐2 impact on the central nervous system (CNS) raises key questions on its impact for risk of later life cognitive decline, Alzheimer’s disease (AD), and other dementia. Methods The Alzheimer’s Association and representatives from more than 30 countries—with technical guidance from the World Health Organization—have formed an international consortium to […]

LETTER: “Time for government to take aerosol transmission of COVID-19 seriously”

The following open letter from 363 Canadian experts was sent to the prime minister, premiers and chief medical officers of the federal, provincial and territorial governments. We are a group of physicians, scientists, occupational health and safety experts, engineers and nursing professionals who have been following COVID-19 developments closely. We are deeply concerned by the […]

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