Articles: coronavirus.
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We spotted severe acute respiratory syndrome coronavirus 2 on polystyrene plastic, aluminum, and glass for 96 hours with and without bovine serum albumin (3 g/L). We observed a steady infectivity (<1 log10 drop) on plastic, a 3.5 log10 decrease on glass, and a 6 log10 drop on aluminum. The presence of proteins noticeably prolonged infectivity.
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Role of the GTNGTKR motif in the N-terminal receptor-binding domain of the SARS-CoV-2 spike protein.
The 2019 novel coronavirus disease (COVID-19) that emerged in China has been declared as public health emergency of international concern by the World Health Organization and the causative pathogen was named severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). In this report, we analyzed the structural characteristics of the N-terminal domain of the S1 subunit (S1-NTD) of the SARS-CoV-2 spike protein in comparison to the SARS-CoV in particular, and to other viruses presenting similar characteristic in general. ⋯ In particular, motifs similar to the insertion 72GTNGTKR78 have been found in structural proteins of other viruses; and these motifs were located in putative regions involved in recognizing protein and sugar receptors, suggesting therefore that similar binding abilities could be displayed by the SARS-CoV-2 S1-NTD. Moreover, concerning the origin of these NTD insertions, our findings point towards an evolutionary acquisition rather than the hypothesis of an engineered virus.
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Ann Acad Med Singap · Sep 2020
Clinical Challenges and Considerations in Management of Chronic Pain Patients During a COVID-19 Pandemic.
Since the coronavirus disease 2019 (COVID-19) was deemed a pandemic on 11 March 2020, we have seen exponential increases in the number of cases and deaths worldwide. The rapidly evolving COVID-19 situation requires revisions to clinical practice to defer non-essential clinical services to allocate scarce medical resources to the care of the COVID-19 patient and reduce risk to healthcare workers. Chronic pain patients require long-term multidisciplinary management even during a pandemic. ⋯ The chronic pain patient faces a potential risk of functional and emotional decline during a pandemic, increasing healthcare burden in the long term. Clinical decisions on pain management strategies should be based on balancing the risks and benefits to the individual patient. In this commentary, we aim to discuss the basis behind some of the decisions and safeguards that were made at our tertiary pain centre over the last 6 months during the COVID-19 outbreak.