scholarly journals Jet Fans in the Underground Car Parks and Virus Transmission 

2020 ◽  
Author(s):  
Ata Nazari ◽  
Moharram Jafari ◽  
Naser Rezaei ◽  
Farzad Taghizadeh-Hesary
Keyword(s):  
Numerical Simulation ◽  
Severe Acute Respiratory Syndrome ◽  
Virus Transmission ◽  
Quantitative Understanding ◽  
Novel Coronavirus ◽  
Respiratory Droplets

Abstract Jet fans are increasingly preferred over traditional ducted systems as a means of ventilating pollutants from large spaces such as underground car parks. The spread of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) -which causes novel coronavirus disease (COVID-19)- through the jet fans in the underground car parks has been considered a matter of key concern. A quantitative understanding of the propagation of respiratory droplets/particles/aerosols containing the virus is important. However, to date, studies are yet to demonstrate the viral (e.g. SARS-CoV-2) transmission in the underground car parks equipped with jet fans. In this paper, the numerical simulation has been performed to assess the effects of jet fans on the spreading of viruses inside the underground car parks.

scholarly journals The new coronavirus disease: what do we know so far?

2020 ◽  
Vol 12 (5) ◽  
pp. 193-201 ◽  
Author(s):  
Sammer Tang ◽  
Mike Brady ◽  
Jo Mildenhall ◽  
Ursula Rolfe ◽  
Alexandra Bowles ◽  
...  
Keyword(s):  
Risk Factors ◽  
Severe Acute Respiratory Syndrome ◽  
Drug Treatment ◽  
Clinical Assessment ◽  
Older Age ◽  
New Disease ◽  
Airborne Transmission ◽  
Clinical Guidance ◽  
Novel Coronavirus ◽  
Respiratory Droplets

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a novel coronavirus that causes the new disease COVID-19. Symptoms range from mild to severe with a higher incidence of severe cases in patients with risk factors such as older age and comorbidities. COVID-19 is mainly spread through the inhalation of respiratory droplets from coughing or sneezing or via contact with droplet-contaminated surfaces. Paramedics should be aware that some aerosol-generating procedures may put them at a higher risk of contracting the virus via possible airborne transmission. Use of remote triage clinical assessment is likely to increase as a result of the pandemic. There is no curative drug treatment for the virus and some medications may exacerbate its effects or make patients more susceptible to it. Evidence and guidelines are evolving on SARS-CoV-2 and COVID-19. Paramedics should keep up to date with the latest clinical guidance from their employers.

scholarly journals The New Coronavirus Disease (COVID-19): What Do We Know So Far?

2020 ◽  
Author(s):  
Sammer Tang ◽  
Mike Brady ◽  
Jo Mildenhall ◽  
Ursula Rolfe ◽  
Alex Bowles ◽  
...  
Keyword(s):  
Risk Factors ◽  
Severe Acute Respiratory Syndrome ◽  
Drug Treatment ◽  
Clinical Assessment ◽  
Older Age ◽  
Airborne Transmission ◽  
Clinical Guidance ◽  
Natural Response ◽  
Novel Coronavirus ◽  
Respiratory Droplets

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a novel coronavirus that causes the new Coronavirus disease (COVID-19). The symptoms range from mild to severe with a higher incidence of severe cases seen in patients with risk factors such as older age and comorbidities. COVID-19 is mainly spread through the inhalation of respiratory droplets from coughing or sneezing or via contact with droplet-contaminated surfaces. Paramedics should be aware that some aerosol generating procedures (AGPs) may put them at a higher risk of contracting the virus via possible airborne transmission. The use of remote triage clinical assessment is likely to increase as a result of the pandemic. There is no curative drug treatment for the virus and some medications may exacerbate its effects or make patients more susceptible to it. Paramedics should accept that feeling stressed by the pandemic is a natural response. Official guidelines and advice are evolving continually as the evidence on SARS-CoV-2 and COVID-19 grows. Paramedics should keep up to date with the latest clinical guidance from their employers.

scholarly journals Risk Assessment of SARS-CoV-2 in Antarctic Wildlife

2020 ◽  
Author(s):  
Andrés Barbosa ◽  
Arvind Vansani ◽  
Virginia Morandini ◽  
Wray Grimaldi ◽  
Ralph E.T. Vanstreels ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Severe Acute Respiratory Syndrome ◽  
Virus Transmission ◽  
Host Susceptibility ◽  
Transmission Risk ◽  
The World ◽  
Human Introduction ◽  
Novel Coronavirus ◽  
Available Information ◽  
The Antarctic

The coronavirus disease 2019 (COVID-19) pandemic, caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has spread rapidly to most parts of the world, causing high numbers of deaths and significant social and economic impacts. SARS-CoV-2 is a novel coronavirus with a suggested zoonotic origin and with the potential for cross-species transmission among animals. Antarctica can be considered the only continent free of SARS-CoV-2 although at the end of the 2019-2020 tourist season, at least one SARS-CoV-2 positive tourist visited the Antarctic Peninsula. Therefore, concerns have been expressed regarding the potential human introduction of this virus to the continent through the activities of research or tourism with potential effects including those related to human health, but also the potential for virus transmission to Antarctic wildlife. This reverse-zoonotic transmission risk to Antarctic wildlife is assessed considering the available information on host susceptibility, dynamics of the infection in humans, and contact interactions between humans and Antarctic wildlife. Measures to reduce the risk are proposed as well as the identification of knowledge gaps related to this issue.

scholarly journals Evolutionary trajectory of SARS-CoV-2 and emerging variants

2021 ◽  
Vol 18 (1) ◽  
Author(s):  
Jalen Singh ◽  
Pranav Pandit ◽  
Andrew G. McArthur ◽  
Arinjay Banerjee ◽  
Karen Mossman
Keyword(s):  
Severe Acute Respiratory Syndrome ◽  
Evolutionary History ◽  
Severe Disease ◽  
Virus Transmission ◽  
Virus Evolution ◽  
Evolutionary Trajectory ◽  
Independent Evolution ◽  
Human Coronaviruses ◽  
Novel Coronavirus ◽  
Endemic Infections

AbstractThe emergence of a novel coronavirus, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), and more recently, the independent evolution of multiple SARS-CoV-2 variants has generated renewed interest in virus evolution and cross-species transmission. While all known human coronaviruses (HCoVs) are speculated to have originated in animals, very little is known about their evolutionary history and factors that enable some CoVs to co-exist with humans as low pathogenic and endemic infections (HCoV-229E, HCoV-NL63, HCoV-OC43, HCoV-HKU1), while others, such as SARS-CoV, MERS-CoV and SARS-CoV-2 have evolved to cause severe disease. In this review, we highlight the origins of all known HCoVs and map positively selected for mutations within HCoV proteins to discuss the evolutionary trajectory of SARS-CoV-2. Furthermore, we discuss emerging mutations within SARS-CoV-2 and variants of concern (VOC), along with highlighting the demonstrated or speculated impact of these mutations on virus transmission, pathogenicity, and neutralization by natural or vaccine-mediated immunity.

Novel Coronavirus Disease (COVID-19): A Narrative Review Based on Current Status

2020 ◽  
Vol 18 ◽  
Author(s):  
Rina Das ◽  
Dinesh Kumar Mehta ◽  
Meenakshi Dhanawat
Keyword(s):  
Severe Acute Respiratory Syndrome ◽  
Clinical Symptoms ◽  
Virus Disease ◽  
Relevant Literature ◽  
World Health ◽  
Current Status ◽  
Future Research ◽  
Treatment And Prevention ◽  
First Case ◽  
Novel Coronavirus

Abstract:: A novel virus, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), appeared and expanded globally by the end of year in 2019 from Wuhan, China, causing severe acute respiratory syndrome. During its initial stage, the disease was called the novel coronavirus (2019-nCoV). It was named COVID-19 by the World Health Organization (WHO) on 11 February 2020. The WHO declared worldwide the SARS-CoV-2 virus a pandemic on March 2020. On 30 January 2020 the first case of Corona Virus Disease 2019 (COVID-19) was reported in India. Now in current situation the virus is floating in almost every part of the province and rest of the globe. -: On the basis of novel published evidences, we efficiently summarized the reported work with reference to COVID-19 epidemiology, pathogen, clinical symptoms, treatment and prevention. Using several worldwide electronic scientific databases such as Pubmed, Medline, Embase, Science direct, Scopus, etc were utilized for extensive investigation of relevant literature. -: This review is written in the hope of encouraging the people successfully with the key learning points from the underway efforts to perceive and manage SARS-CoV-2, suggesting sailent points for expanding future research.

scholarly journals Neurological symptoms, manifestations, and complications associated with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and coronavirus disease 19 (COVID-19)

2021 ◽  
Author(s):  
Biyan Nathanael Harapan ◽  
Hyeon Joo Yoo
Keyword(s):  
Severe Acute Respiratory Syndrome ◽  
Case Reports ◽  
Case Series ◽  
Altered Mental Status ◽  
Neurological Complications ◽  
Neurological Symptoms ◽  
Neurological Manifestations ◽  
Fisher Syndrome ◽  
Novel Coronavirus ◽  
The Impact

AbstractSevere acute respiratory syndrome coronavirus 2 (SARS-CoV-2), a novel coronavirus, is responsible for the outbreak of coronavirus disease 19 (COVID-19) and was first identified in Wuhan, China in December 2019. It is evident that the COVID-19 pandemic has become a challenging world issue. Although most COVID-19 patients primarily develop respiratory symptoms, an increasing number of neurological symptoms and manifestations associated with COVID-19 have been observed. In this narrative review, we elaborate on proposed neurotropic mechanisms and various neurological symptoms, manifestations, and complications of COVID-19 reported in the present literature. For this purpose, a review of all current published literature (studies, case reports, case series, reviews, editorials, and other articles) was conducted and neurological sequelae of COVID-19 were summarized. Essential and common neurological symptoms including gustatory and olfactory dysfunctions, myalgia, headache, altered mental status, confusion, delirium, and dizziness are presented separately in sections. Moreover, neurological manifestations and complications that are of great concern such as stroke, cerebral (sinus) venous thrombosis, seizures, meningoencephalitis, Guillain–Barré syndrome, Miller Fisher syndrome, acute myelitis, and posterior reversible encephalopathy syndrome (PRES) are also addressed systematically. Future studies that examine the impact of neurological symptoms and manifestations on the course of the disease are needed to further clarify and assess the link between neurological complications and the clinical outcome of patients with COVID-19. To limit long-term consequences, it is crucial that healthcare professionals can early detect possible neurological symptoms and are well versed in the increasingly common neurological manifestations and complications of COVID-19.

scholarly journals A Timely Call to Arms: COVID-19, the Circadian Clock, and Critical Care

2021 ◽  
Vol 36 (1) ◽  
pp. 55-70
Author(s):  
Jeffrey Haspel ◽  
Minjee Kim ◽  
Phyllis Zee ◽  
Tanja Schwarzmeier ◽  
Sara Montagnese ◽  
...  
Keyword(s):  
Intensive Care Unit ◽  
Human Physiology ◽  
Critical Care ◽  
Intensive Care ◽  
Severe Acute Respiratory Syndrome ◽  
Circadian Clock ◽  
Clinical Course ◽  
Disease Expression ◽  
Severe Manifestation ◽  
Novel Coronavirus

We currently find ourselves in the midst of a global coronavirus disease 2019 (COVID-19) pandemic, caused by the highly infectious novel coronavirus, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Here, we discuss aspects of SARS-CoV-2 biology and pathology and how these might interact with the circadian clock of the host. We further focus on the severe manifestation of the illness, leading to hospitalization in an intensive care unit. The most common severe complications of COVID-19 relate to clock-regulated human physiology. We speculate on how the pandemic might be used to gain insights on the circadian clock but, more importantly, on how knowledge of the circadian clock might be used to mitigate the disease expression and the clinical course of COVID-19.

scholarly journals Disinfection of SARS-CoV-2 Contaminated Surfaces of Personal Items with UVC-LED Disinfection Boxes

Viruses ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 598
Author(s):  
Maren Bormann ◽  
Mira Alt ◽  
Leonie Schipper ◽  
Lukas van de Sand ◽  
Mona Otte ◽  
...  
Keyword(s):  
Severe Acute Respiratory Syndrome ◽  
Close Contact ◽  
Credit Cards ◽  
Organic Matrix ◽  
Viral Loads ◽  
Small Aerosol ◽  
Time Periods ◽  
Respiratory Droplets ◽  
Glass Metal

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is transmitted from person to person by close contact, small aerosol respiratory droplets, and potentially via contact with contaminated surfaces. Herein, we investigated the effectiveness of commercial UVC-LED disinfection boxes in inactivating SARS-CoV-2-contaminated surfaces of personal items. We contaminated glass, metal, and plastic samples representing the surfaces of personal items such as smartphones, coins, or credit cards with SARS-CoV-2 formulated in an organic matrix mimicking human respiratory secretions. For disinfection, the samples were placed at different distances from UVC emitting LEDs inside commercial UVC-LED disinfection boxes and irradiated for different time periods (up to 10 min). High viral loads of SARS-CoV-2 were effectively inactivated on all surfaces after 3 min of irradiation. Even 10 s of UVC-exposure strongly reduced viral loads. Thus, UVC-LED boxes proved to be an effective method for disinfecting SARS-CoV-2-contaminated surfaces that are typically found on personal items.

scholarly journals Questioning COVID-19 Surface Stability and Fomite Spreading in Three Aeromedical Cases: A Case Series

2020 ◽  
Author(s):  
Sean Horoho ◽  
Stephen Musik ◽  
David Bryant ◽  
William Brooks ◽  
Ian M Porter
Keyword(s):  
Severe Acute Respiratory Syndrome ◽  
Close Contact ◽  
Small Sample Size ◽  
Case Series ◽  
Small Sample ◽  
Posture Analysis ◽  
Surface Stability ◽  
Single Positive ◽  
Means Of Transmission ◽  
Respiratory Droplets

ABSTRACT It is well established that coronavirus disease 2019 is primarily transmitted through respiratory droplets, and there is mounting research speculation that it may also be transmitted via fomites. Several studies have shown that the virus can persist on both porous and nonporous surfaces for hours to days, depending upon the material. This article examines three cases of polymerase chain reaction–proven severe acute respiratory syndrome coronavirus 2 infection with several additional individuals meeting CDC close contact criteria. In 1 case, 195 downstream contacts were all tested to prevent a mass outbreak in a deployment posture. Analysis of these contacts yielded only a single positive test, which could be reasonably ascribed to respiratory droplet transmission. While these cases and their contacts ultimately represent a small sample size, we suggest fomite spread may not be a significant means of transmission for severe acute respiratory syndrome coronavirus 2 in real-world operational scenarios.

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