The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) began proliferating widely throughout the world in late 2019/early 2020, creating a global pandemic and health crisis. Although vaccines became available to the public approximately one year after the onset of the pandemic, there still remains much hesitancy surrounding vaccination even two years into the pandemic. One key concern comes from reports of breakthrough infections among the vaccinated that show comparable levels of peak viral load as the unvaccinated, calling into question the ability of vaccines to slow or prevent transmission. Therefore young, healthy individuals who are at low risk of serious complications themselves have little incentive to receive a vaccine that they are not convinced will protect others around them. To address this important concern, this article analyzes COVID-19 incidence in the United States as a function of each state9s vaccination rate. Results show that states with higher percentages of fully vaccinated individuals report fewer new cases among the remaining unvaccinated population. These data add to accumulating evidence that COVID-19 vaccinations can indeed slow the spread of SARS-CoV-2, and are an important tool in society9s arsenal to put this pandemic behind us.
The COVID-19 pandemic has called for swift action from local governments, which have instated Nonpharmaceutical Interventions (NPIs) to curb the spread of SARS-Cov-2. The quick and decisive decision to save lives through blunt instruments has raised questions about the conditions under which decision-makers should employ mitigation or suppression strategies to tackle the COVID-19 pandemic. More broadly, there are still debates over which set of strategies should be adopted to control different pandemics, and the lessons learned for SARS-Cov-2 may not apply to a new pathogen. While curbing SARS-Cov-2 required blunt instruments, it is unclear whether a less-transmissible and less- deadly emerging pathogen would justify the same response. This paper illuminates this question using a parsimonious transmission model by formulating the social distancing lives vs. livelihoods dilemma as a boundary value problem. In this setup, society balances the costs and benefits of social distancing contingent on the costs of reducing transmission relative to the burden imposed by the disease. To the best of our knowledge, our approach is distinct in the sense that strategies emerge from the problem structure rather than being imposed a priori. We find that the relative time-horizon of the pandemic (i.e., the time it takes to develop effective vaccines and treatments) and the relative cost of social distancing influence the choice of the optimal policy. Unsurprisingly, we find that the appropriate policy response depends on these two factors. We discuss the conditions under which each policy archetype (suppression vs. mitigation) appears to be the most appropriate.
The characteristics of immune memory established in response to inactivated SARS-CoV-2 vaccines remains unclear. We determined the magnitude, quality and persistence of cellular and humoral memory responses up to 6 months after vaccination with BBV152/Covaxin. Here, we show that the quantity of vaccine-induced spike- and nucleoprotein-antibodies is comparable to that following natural infection and the antibodies are detectable up to 6 months. The RBD-specific antibodies decline in the range of 3 to 10-fold against the SARS-CoV-2 variants in the order of alpha (B.1.1.7) > delta (B.1.617.2) > beta (B.1.351), with no observed impact of gamma (P.1) and kappa (B.1.617.1) variant. We found that the vaccine induces memory B cells, similar to natural infection, which are impacted by virus variants in the same order as antibodies. The vaccine further induced antigen-specific functionally potent multi-cytokine expressing CD4+ T cells in ~85% of the subjects, targeting spike and nucleoprotein of SARS-CoV-2. Marginal ~1.3 fold-reduction was observed in vaccine-induced CD4+ T cells against the beta variant, with no significant impact of the alpha and the delta variants. The antigen-specific CD4+ T cells were populated in the central memory compartment and persisted up to 6 months of vaccination. Importantly the vaccine generated Tfh cells that are endowed with B cell help potential, similar to the Tfh cells induced after natural infection. Altogether, these findings establish that the inactivated virus vaccine BBV152 induces robust immune memory to SARS-CoV-2 and variants of concern, which persist for at least 6 months after vaccination. This study provides insight into the attributes of BBV152-elicited immune memory, and has implication for future vaccine development, guidance for use of inactivated virus vaccine, and booster immunization.
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has been and remains one of the major challenges humanity has faced thus far. Over the past few months, large amounts of information have been collected that are only now beginning to be assimilated. In the present work, the existence of residual information in the massive numbers of rRT-PCRs that tested positive out of the almost half a million tests that were performed during the pandemic is investigated. This residual information is believed to be highly related to a pattern in the number of cycles that are necessary to detect positive samples as such. Thus, a database of more than 20,000 positive samples was collected, and two supervised classification algorithms (a support vector machine and a neural network) were trained to temporally locate each sample based solely and exclusively on the number of cycles determined in the rRT-PCR of each individual. Finally, the results obtained from the classification show how the appearance of each wave is coincident with the surge of each of the variants present in the region of Galicia (Spain) during the development of the SARS-CoV-2 pandemic and clearly identified with the classification algorithm.
From a comprehensive and systematic search of the relevant literature on signal data signature (SDS)-based artificial intelligence/machine learning (AI/ML) systems designed to aid in the diagnosis of COVID-19 illness, we identified the highest quality articles with statistically significant data sets for a head-to-head comparison to our own model in development. Further comparisons were made to the recently released “Good Machine Learning Practice (GMLP) for Medical Device Development: Guiding Principles” and, in conclusions, we proposed supplemental principles aimed at bringing AI/ML technologies in closer alignment GMLP and Good Clinical Practices (GCP).
The COVID-19 data catalogue is a repository that provides a landscape view of COVID-19 studies and datasets as a putative source to enable researchers to develop personalized COVID-19 predictive risk models. The COVID-19 data catalogue currently contains over 400 studies and their relevant information collected from a wide range of global sources such as global initiatives, clinical trial repositories, publications and data repositories. Further, the curated content stored in this data catalogue is complemented by a web application, providing visualizations of these studies, including their references, relevant information such as measured variables, and the geographical locations of where these studies were performed. This resource is one of the first to capture, organize and store studies, datasets and metadata in the area of COVID-19 in a comprehensive repository. We are convinced that our work will facilitate future research and development of personalized predictive risk models of COVID-19.
BREATHE: Virtual Self-management for Long COVID-19 - Condition: COVID-19
Intervention: Other: BREATHE
Sponsor:
University of Calgary
Not yet recruiting
Mesenchymal Stem Cell Secretome In Severe Cases of COVID-19 - Condition: COVID-19
Interventions: Biological: Injection of secretome - mesenchymal stem cell; Other: Placebo; Drug: Standard treatment of Covid-19
Sponsor: Indonesia University
Completed
Adding Colchicine to Tocilizumab in Patients With Severe COVID-19 Pneumonia. - Condition: COVID-19 Pneumonia
Intervention: Drug: Colchicine
Sponsor:
Hamad Medical Corporation
Recruiting
Controlled Trial of Angiotensin Receptor Blocker (ARB) & Chemokine Receptor Type 2 (CCR2) Antagonist for the Treatment of COVID-19 - Conditions: COVID-19; SARS-CoV2 Infection
Interventions: Drug: Candesartan Cilexetil; Drug: Repagermanium; Drug: Candesartan Placebo; Drug: Repagermanium Placebo
Sponsors:
University of Sydney; The George Institute for Global Health, India
Not yet recruiting
PREVENT-COVID-19: A Q-Griffithsin Intranasal Spray - Condition: COVID-19 Prevention
Interventions: Drug: Q-Griffithsin; Other: Placebo
Sponsors: Kenneth Palmer; United States Department of Defense
Recruiting
the Safety and Efficacy of Meplazumab in Patients With COVID-19 - Condition: Covid19
Interventions: Drug: Meplazumab for Injection; Drug: Sterile normal saline (0.9%)
Sponsor: Jiangsu Pacific Meinuoke Bio Pharmaceutical Co Ltd
Not yet recruiting
Health Information Technology for COVID-19 Testing in Schools (SCALE-UP Counts) - Condition: COVID-19
Interventions: Behavioral: Text Messaging (TM); Behavioral: Text Messaging + Health Navigation (TM+HN)
Sponsors: University of Utah; Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
Not yet recruiting
Hypertonic Saline Nasal Irrigation and Gargling (HSNIG) for Suspected COVID-19 in Pakistan - Condition: COVID-19
Intervention: Other: Hypertonic Saline Nasal Irrigation and Gargles (HSNIG)
Sponsors: The Allergy and Asthma Institute, Pakistan; University of Edinburgh
Recruiting
Immunogenicity And Safety of COVID-19 Vaccine , Inactivated Co -Administration With EV71 Vaccine (Vero Cell) - Condition: COVID-19
Intervention: Biological: Experimental Group
Sponsor:
Sinovac Biotech Co., Ltd
Not yet recruiting
Homeopathic Treatment of Post-acute COVID-19 Syndrome - Condition: Post-acute Covid-19 Syndrome
Interventions: Drug: Homeopathic Medication; Other: Placebo
Sponsors: Southwest College of Naturopathic Medicine; Samueli Institute for Information Biology
Recruiting
Intranasal INNA-051 for Prevention of COVID-19 in Adults - Condition: COVID-19 Pandemic
Interventions: Drug: INNA-051; Other: Placebo
Sponsor: ENA Respiratory Pty Ltd
Not yet recruiting
Feasibility Pilot Clinical Trial of Omega-3 Supplement vs. Placebo for Post Covid-19 Recovery Among Health Care Workers - Condition: COVID-19
Interventions: Drug: Omega-3 (EPA+DHA); Drug: Placebo
Sponsor: Hackensack Meridian Health
Not yet recruiting
Effectiveness of Interactive Voice Response for COVID-19 Vaccination Training in the Democratic Republic of the Congo - Conditions: COVID-19 Vaccine Knowledge; COVID-19 Vaccine Beliefs
Interventions:
Behavioral: COVID-19 Vaccine IVR Training; Behavioral: Control Condition
Sponsors: Stanford University; Viamo
Not yet recruiting
A Clinical Trial to Evaluate the Efficacy of RUTI® to Reduce the Severity of SARS-CoV-2 Infection (COVID-19) - Condition: COVID-19
Interventions: Biological: RUTI® vaccine; Biological: Placebo
Sponsors: RUTI Immunotherapeutics S.L.; Archivel Farma S.L.
Not yet recruiting
Study to Evaluate the Safety and Immunogenicity of SARS-CoV-2 Vaccine (IN-B009) in Healthy Adults (COVID-19) - Condition: COVID-19
Interventions: Biological: IN-B009 (Low-dose); Biological: IN-B009 (High- dose)
Sponsor: HK inno.N Corporation
Recruiting
A Previously Undiscovered Circular RNA, circTNFAIP3, and Its Role in Coronavirus Replication - Circular RNAs (circRNAs) are a newly discovered class of noncoding RNAs (ncRNAs) present in various tissues and cells. However, the functions of most circRNAs have not been verified experimentally. Here, using deltacoronavirus as a model, differentially expressed circRNAs in cells with or without deltacoronavirus infection were analyzed by RNA sequencing to characterize the cellular responses to RNA virus infection. More than 57,000 circRNA candidates were detected, and seven significantly…
25-Hydroxycholesterol Inhibits Kaposi’s Sarcoma Herpesvirus and Epstein-Barr Virus Infections and Activates Inflammatory Cytokine Responses - Oncogenic gammaherpesviruses express viral products during latent and lytic infection that block the innate immune response. Previously, we found that Kaposi’s sarcoma herpesvirus (KSHV/human herpesvirus-8) viral microRNAs (miRNAs) downregulate cholesterol biogenesis, and we hypothesized that this prevents the production of 25-hydroxycholesterol (25HC), a cholesterol derivative. 25HC blocks KSHV de novo infection of primary endothelial cells at a postentry step and decreases viral gene…
Interleukin-6 in SARS-CoV-2 induced disease: Interactions and therapeutic applications - Interleukin-6 (IL-6) is a multi-tasking cytokine that represents high activity in patients with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and cancer. High concentration of this pleiotropic cytokine accounts for hyperinflammation and cytokine storm, and is related to multi-organ failure in patients with SARS-CoV-2 induced disease. IL-6 promotes lymphopenia and increases C-reactive protein (CRP) in such cases. However, blockade of IL-6 is not a full-proof of complete response….
Prevalence of depression, anxiety, and psychological distress in patients with epilepsy during COVID-19: A systematic review - CONCLUSIONS: People with epilepsy were considered as a susceptible group to the impact of the pandemic. Therefore, great attention should be paid to PWE and adequate psychological supports provided in this period to relieve or inhibit risks to mental health in PWE.
Disulfide bonds play a critical role in the structure and function of the receptor-binding domain of the SARS-CoV-2 Spike antigen - The current coronavirus pandemic is exerting a tremendously detrimental impact on global health. The Spike proteins of coronaviruses, responsible for cell receptor binding and viral internalization, possess multiple and frequently conserved disulfide bonds raising the question about their role in these proteins. Here, we present a detailed structural and functional investigation of the disulfide bonds of the SARS-CoV-2 Spike receptor-binding domain (RBD). Molecular dynamics simulations of the…
Chronic pharmacological antagonism of murine GM-CSF-R-alpha does not replicate the Pulmonary Alveolar Proteinosis phenotype but does alter lung surfactant turnover - Granulocyte macrophage colony stimulating factor (GM-CSF) is a key participant in, and a clinical target for, the treatment of inflammatory diseases including rheumatoid arthritis (RA). Therapeutic inhibition of GM-CSF signalling using monoclonal antibodies to the α-subunit of the GM-CSF receptor (GMCSFRα) has shown clear benefit in patients with RA, giant cell arteritis (GCA) and some efficacy in severe SARS-CoV-2 infection. However, GM-CSF autoantibodies are associated with the development of…
Porcine epidemic diarrhea virus nsp14 inhibits NF-kappaB pathway activation by targeting the IKK complex and p65 - Coronaviruses (CoVs) are a group of related enveloped RNA viruses that have severe consequences in a wide variety of animals by causing respiratory, enteric or systemic diseases. Porcine epidemic diarrhea virus (PEDV) is an economically important CoV distributed worldwide that causes diarrhea in pigs. nsp14 is a nonstructural protein of PEDV that is involved in regulation of innate immunity and viral replication. However, the function and mechanism by which nsp14 modulates and manipulates host…
A novel compound active against SARS-CoV-2 targeting uridylate-specific endoribonuclease (NendoU/NSP15): in silico and in vitro investigations - NendoU (NSP15) is an Mn(2+)-dependent, uridylate-specific enzyme, which leaves 2’-3’-cyclic phosphates 5’ to the cleaved bond. Our in-house library was subjected to high throughput virtual screening (HTVS) to identify compounds with potential to inhibit NendoU enzyme, high-rank compounds (those that bound to multiple target structures) were further subjected to 100 nanoseconds MD simulations. Among these, one was found to be bound highly stable within the active site of the NendoU protein…
How Fuzzy-trace Theory Predicts Development of Risky Decision Making, with Novel Extensions to Culture and Reward Sensitivity - Comprehensive meta-analyses of risky decision making in children, adolescents, and adults have revealed that age trends in disambiguated laboratory tasks confirmed fuzzy-trace theory’s prediction that preference for risk decreases monotonically from childhood to adulthood. These findings are contrary to predictions of dual systems or neurobiological imbalance models. Assumptions about increasing developmental reliance on mental representations of the gist of risky options are essential to…
Innate Immune Training with Bacterial Extracts Enhances Lung Macrophage Recruitment to Protect from Betacoronavirus Infection - Training of the innate immune system with orally ingested bacterial extracts was demonstrated to have beneficial effects on infection clearance and disease outcome. The aim of our study was to identify cellular and molecular processes responsible for these immunological benefits. We used a murine coronavirus (MCoV) A59 mouse model treated with the immune activating bacterial extract Broncho-Vaxom (BV) OM-85. Tissue samples were analysed with qPCR, RNA sequencing, histology, and flow cytometry….
Debulking SARS-COV-2 in saliva using angiotensin converting enzyme 2 in the chewing gum to decrease oral virus transmission and infection - To advance a novel concept of debulking virus in the oral cavity, the primary site of viral replication, virus trapping proteins CTB-ACE2 were expressed in chloroplasts and clinical grade plant material was developed to meet FDA requirements. Chewing gum (2 grams) containing plant cells expressed CTB-ACE2 up to17.2 mg ACE2/g DW (11.7% leaf protein) have physical characteristics, taste/flavor like conventional gums and no protein was lost during gum compression. CTB-ACE2 gum efficiently (>95%)…
Picomolar inhibition of SARS-CoV-2 variants of concern by an engineered ACE2-IgG4-Fc fusion protein - SARS-CoV-2 enters host cells after binding through its spike glycoprotein to the angiotensin-converting enzyme 2 (ACE2) receptor. Soluble ACE2 ectodomains bind and neutralize the virus, yet their short in vivo half-live limits their therapeutic use. This limitation can be overcome by fusing the fragment crystallizable (Fc) part of human immunoglobulin G (IgG) to the ACE2 ectodomain, but this bears the risk of Fc-receptor activation and antibody-dependent cellular cytotoxicity. Here, we describe…
Human carboxylesterase 1A plays a predominant role in the hydrolytic activation of remdesivir in humans - Remdesivir, an intravenous nucleotide prodrug, has been approved for treating COVID-19 in hospitalized adults and pediatric patients. Upon administration, remdesivir can be readily hydrolyzed to form its active form GS-441524, while the cleavage of the carboxylic ester into GS-704277 is the first step for remdesivir activation. This study aims to assign the key enzymes responsible for remdesivir hydrolysis in humans, as well as to investigate the kinetics of remdesivir hydrolysis in various…
Proximity-dependent biotinylation detects associations between SARS coronavirus nonstructural protein 1 and stress granule-associated proteins - The nonstructural protein 1 (nsp1) of severe acute respiratory syndrome coronaviruses (SARS-CoV and SARS-CoV-2) is a critical viral protein that suppresses host gene expression by blocking the assembly of the ribosome on host messenger RNAs (mRNAs). To understand the mechanism of inhibition of host gene expression, we sought to identify cellular proteins that interact with nsp1. Using proximity-dependent biotinylation followed by proteomic analyses of biotinylated proteins, here we captured…
Common cardiac medications potently inhibit ACE2 binding to the SARS-CoV-2 Spike, and block virus penetration and infectivity in human lung cells - To initiate SARS-CoV-2 infection, the Receptor Binding Domain (RBD) on the viral spike protein must first bind to the host receptor ACE2 protein on pulmonary and other ACE2-expressing cells. We hypothesized that cardiac glycoside drugs might block the binding reaction between ACE2 and the Spike (S) protein, and thus block viral penetration into target cells. To test this hypothesis we developed a biochemical assay for ACE2:Spike binding, and tested cardiac glycosides as inhibitors of binding….
Anti-SARS-CoV-2 antibodies and uses thereof I - - link
Anti-SARS-CoV-2 antibodies and uses thereof II - - link
휴대용 자화 육각수물 발생기 - 본인의 발명은, 사람의 신체에서 육각수물 생성에는 한계가 있으며, 동맥혈관, 정맥혈관 내부 혈액은 수분이 약 90% 이며, 건강한 성인이면, 육각수 물은 약 62% 이며, COVID-19 환자, 사고의 부상, 17만개의 질병, 질환으로 조직세포가 손상되면 자기 신체수복을 위해서 육각수 물을 평소보다 많이 흡수 하면서 동반 산소부족 상태가 되며, 육각수물 보충 없이 산소 호흡기를 사용하면 심각한 후유증이 발병 할 수 있다.
육각수물 부족 상태를 해결하기 위해서, 객관적인 과학적으로 네오디뮴(원자번호 = 60) 3.000 가우스의 자기장을 이용하여서 육각수 물을 62% ~ 80% 이상, 상시 유지 시켜주는 제조 방법이며, 휴대용으로 항시 착용 가능하다. 결론은 COVID-19, 질병, 질환의 근본적인 원인은, 육각수물 부족 상태가 되면 동반 산소 부족 상태가 되면서, 염증 -> 통증 -> 극심한 통증 -> 석회화, 섬유화, 암 까지 발병 한다. - link
휴대용 자화 육각수물 발생기 - 본인의 발명은, 사람의 신체에서 육각수 생성에는 한계가 있으며, 동맥혈관, 정맥혈관 내부 혈액은 수분이 90% 이며, 육각수물은 약 62% 이며, COVID-19, 사고 부상, 질병, 질환으로 조직세포가 손상되면 자기 신체수복을 위해서 육각수물을 평소보다 많이 흡수하면서 산소부족 상태가 되며, 육각수 보충 없이 산소호흡기를 사용하면 심각한 후유증이 발병 할 수 있다 육각수물 부족 상태를 해결하기 위해서, 객관적인 과학적으로 네오디뮴(원자번호 = 60) 3.000 가우스의 자기장을 이용하여서 육각수물을 62% ~ 80% 상시 유지 시켜주는 제조 방법이며, 휴대용으로 항시 착용 가능하다. 결론은 COVID-19, 질병, 질환의 근본적인 원인은, 육각수물 부족 상태가 되면 동반 산소 부족 상태가 되면서, 염증 -> 통증 -> 극심한 통증 -> 석회화, 섬유화, 암 까지 발병 한다. - link
用于检测新冠病毒的配对抗体及其应用 - 本发明涉及一种用于检测新冠病毒的配对抗体及其应用，其包括第一检测抗体和第二检测抗体；第一检测抗体具有如SEQ ID NO:1~3所示的轻链互补决定区，以及如SEQ ID NO:4~6所示的重链互补决定区，第二检测抗体具有如SEQ ID NO:7~9所示的轻链互补决定区，以及如SEQ ID NO:10~12所示的重链互补决定区。本发明筛选得到具有上述互补决定区序列的配对抗体，其识别N蛋白的不同表位，且由于两种抗体识别的是N蛋白非核酸结合区域，不会受核酸负电荷干扰，对核酸抗原表现出了兼容性，具有较好的稳定性，同时上述配对抗体具有较高的亲和力，病毒N蛋白检测灵敏度高。 - link
抗KL-6双特异性抗体及基因、重组载体、药物、试剂盒 - 本发明公开了抗KL‑6双特异性抗体或其变体、或其功能性片段，所述抗KL‑6双特异性抗体或其变体、或其功能性片段包括抗PTS域和抗SEA域，所述抗PTS域的重链可变区的CDR1、CDR2和CDR3分别具有SEQ ID NO.1~3所示的氨基酸序列。本发明还提供了基因、重组载体、药物、试剂盒。本发明的抗KL‑6双特异性抗体或其变体、或其功能性片段用于与KL‑6蛋白特异性结合，基因、重组载体用于抗KL‑6双特异性抗体的制备，药物用于治疗KL‑6蛋白引起的相关疾病，试剂盒用于KL‑6蛋白的定量检测。 - link
基于决策树模型与逻辑回归模型组合的感染筛查方法 - 本发明公开了一种基于决策树模型与逻辑回归模型组合的感染筛查方法，其检测操作方便，可提高感染筛查准确性，该方法基于生命体征监护仪实现，生命体征监护仪与远程数据服务平台通信连接，远程数据服务平台依据临床数据进行感染筛查，该方法包括：通过生命体征监护仪检测获取用户临床数据，将临床数据随机划分为训练集、测试集，将训练集均分为两份：训练集A、训练集B，基于训练集A构建决策树模型，同时，对训练集A进行特征选择，将关键特征向量作为已构建的决策树模型的输入，获取新构造特征向量，基于组合特征向量，构造逻辑回归模型，基于决策树模型和逻辑回归模型组合，对测试集进行预测分类，获取分类结果。 - link
病毒中和抗体与非中和抗体联合检测方法、检测卡及应用 - 一种病毒中和抗体与非中和抗体联合检测方法、检测卡及其应用，通过病毒受体结合蛋白夹心法原理检测中和抗体，其为通过提前设置病毒受体结合蛋白和能阻断中和抗体与其结合的作为配体的蛋白所形成的复合物，将靶向受体蛋白的非中和抗体提前捕获，保证后续通过夹心法检测中和抗体的特异性。解决了现有技术中中和抗体检测灵敏度低、特异性差以及不能区分中和抗体与非中和抗体的问题，提供了一种简便、快速、灵敏度高、特异性高的病毒中和抗体与非中和抗体联合检测方法、检测卡及其应用。 - link
扩增△500-532的SARS-CoV-2 Nsp1基因的引物对及其检测方法 - 本发明公开了一种扩增Δ500‑532的SARS‑CoV‑2 Nsp1基因的引物对及其检测方法。引物对的具体序列如SEQ ID NO.1和SEQ ID NO.2所示，其检测方法为：采用引物对对SARS‑CoV‑2 Nsp1基因进行PCR，对PCR产物进行变性退火后，加入T7EI内切酶孵育，再进行PCR扩增，并判断是否存在Δ500‑532的SARS‑CoV‑2 Nsp1基因。本发明可简便快捷的区分出SARS‑CoV‑2 Nsp1基因突变型和野生型。 - link
多肽及其在新型冠状病毒检测中的应用 - 本发明涉及生物医学领域，具体而言，涉及一种多肽及其在新型冠状病毒检测中的应用。所述多肽包括如下部分：S——Linker——N——avi‑tag。通过经过优化的刚性linker序列把S蛋白和N蛋白串联起来，使得这两个蛋白即具备相对独立的空间构象，又增加了许多优势表位，很大程度上提高了灵敏度和信号值；此外，融合蛋白引入Avi‑tag，使得重组蛋白可以通过固定的位点被固相化，降低包被过程所带来的空间位阻的影响。由此，该多肽能够达到很高的灵敏度和特异性，并且不易发生漏检。 - link