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Baker, M.G., Wilson, N., and Blakely, T. 2020. “Elimination could be the optimal response strategy for covid-19 and other emerging pandemic diseases.” BMJ 2020;371:m4907, 22 December 2020.

Michael Baker and colleagues argue that aiming for elimination of community transmission of the SARS-CoV-2 virus could offer important advantages over a suppression or mitigation strategy with ongoing transmission. The covid-19 pandemic might be remembered for the astonishingly rapid development of effective vaccines. But it should also be remembered as the first respiratory disease pandemic […]

Sudre, C.H., Murray, B., et al. 2020. “Attributes and predictors of Long-COVID: analysis of COVID cases and their symptoms collected by the Covid Symptoms Study App.” medRxiv 2020.10.19.20214494.

Reports of “Long-COVID”, are rising but little is known about prevalence, risk factors, or whether it is possible to predict a protracted course early in the disease. We analysed data from 4182 incident cases of COVID-19 who logged their symptoms prospectively in the COVID Symptom Study app. 558 (13.3%) had symptoms lasting >=28 days, 189 […]

SCIENCE NEWS: “New science reevaluates risks of indoor dining”

“New science reevaluates risks of indoor dining” Globe & Mail By Dasia Moore Globe Staff December 19, 2020 Although few clusters have officially been traced to restaurants, research suggests inside eating is not necessarily a safe environment https://www.bostonglobe.com/2020/12/19/metro/superspreader-destinations-what-makes-indoor-dining-during-covid-19-so-risky/

MacIntyre, C.R. and M.R. Ananda-Rajah. 2020. “Scientific evidence supports aerosol transmission of SARS-COV-2.” Antimicrobial Resistance & Infection Control 9, Article number 202.

We question the evidence cited by Conly et al. [1] to justify recommending masks for routine care of COVID-19 patients. As evidence, the authors cite the R0 and include several references that are not primary research, and only two primary studies. One of these is a study of hospital contamination which found evidence of surface […]

Hwang, S.E., Chang, J.H., et al. 2020.”Possible Aerosol Transmission of COVID-19 Associated with an Outbreak in an Apartment in Seoul, South Korea, 2020″ International Journal of Infectious Diseases, December 16, 2020.

Scientists have strongly implied that aerosols could be the plausible cause of COVID-19 transmission; however, aerosol transmission remains controversial. The study We investigated the epidemiological relationship among infected cases on a recent cluster infection of COVID-19 in an apartment building in Seoul, South Korea. All infected cases were found along two vertical lines of the […]

CDC Releases New Ventilation Guidelines For Indoor Environments To Reduce Covid-19 Risk

https://www.forbes.com/sites/victoriaforster/2020/12/08/cdc-releases-new-ventilation-guidelines-for-indoor-environments-to-reduce-covid-19-risk/ The U.S. Centers for Disease Control and Prevention (CDC) today released new guidelines on the use of ventilation strategies to reduce the risk of exposure to the SARS-CoV2 coronavirus in indoor settings. Indoor environments have long been known to be riskier for the transmission of viral particles than outdoor environments, largely due to relative lack of […]

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 […]

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