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<title>04 November, 2021</title>
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<title>Covid-19 Sentry</title><meta content="width=device-width, initial-scale=1.0" name="viewport"/><link href="styles/simple.css" rel="stylesheet"/><link href="../styles/simple.css" rel="stylesheet"/><link href="https://unpkg.com/aos@2.3.1/dist/aos.css" rel="stylesheet"/><script src="https://unpkg.com/aos@2.3.1/dist/aos.js"></script></head>
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<h1 data-aos="fade-down" id="covid-19-sentry">Covid-19 Sentry</h1>
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<h1 data-aos="fade-right" data-aos-anchor-placement="top-bottom" id="contents">Contents</h1>
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<ul>
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<li><a href="#from-preprints">From Preprints</a></li>
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<li><a href="#from-clinical-trials">From Clinical Trials</a></li>
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<li><a href="#from-pubmed">From PubMed</a></li>
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<li><a href="#from-patent-search">From Patent Search</a></li>
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<h1 data-aos="fade-right" id="from-preprints">From Preprints</h1>
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<li><strong>Mechanisms that could increase cancer vulnerability in COVID-19 mRNA vaccine recipients</strong> -
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<div>
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The BNT162b2 and mRNA-1273 vaccines have been rolled out globally in high numbers. Even minimal risk groups have been fully vaccinated in many countries. We observe certain links that show there are ways cancer can have an easier path to establishing itself as a result of COVID-19 mRNA vaccination.
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<div class="article-link article-html- link">
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🖺 Full Text HTML: <a href="https://osf.io/2ts54/" target="_blank">Mechanisms that could increase cancer vulnerability in COVID-19 mRNA vaccine recipients</a>
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</div></li>
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<li><strong>The effect of passion for activities on fear of COVID-19 and mental health among the Japanese population</strong> -
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As the pandemic limited our lives, people engaged in their favorite activities; either in alternative ways or while disregarding the restrictions. These major activities and our engagement in these activities of life are considered to have a significant impact on our mental health. Thus, this study aimed to examine the relationship between two types of passion (harmonious passion and obsessive passion), fear of COVID-19 (emotional fear responses, symptomatic expressions of fear), and mental distress. To this end, 322 Japanese participants completed an online questionnaire. The results showed that harmonious passion (HP) was positively related to emotional fear responses and negatively to mental distress. On the other hand, obsessive passion (OP) was positively associated with symptomatic expressions of fear and negatively with mental distress. Symptomatic expressions of fear have a stronger positive relationship with mental distress than emotional fear reactions. This study evidenced that HP is a protective factor against pandemics as it improves mental health while appropriately recognizing fear of COVID-19. Focusing on different types of passion may prove effective in improving mental health amidst the pandemic.
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</div>
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<div class="article-link article-html-link">
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🖺 Full Text HTML: <a href="https://psyarxiv.com/rvgs7/" target="_blank">The effect of passion for activities on fear of COVID-19 and mental health among the Japanese population</a>
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</div></li>
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<li><strong>Drug targeting Nsp1-ribosomal complex shows antiviral activity against SARS-CoV-2</strong> -
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<div>
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The SARS-Cov-2 non-structural protein 1 (Nsp1) contains an N-terminal domain and C-terminal helices connected by a short linker region. The C-terminal helices of Nsp1 (Nsp1-C-ter) from SARSCov-2 bind in the mRNA entry channel of the 40S ribosomal subunit and block the entry of mRNAs thereby shutting down host protein synthesis. Nsp1 suppresses the host immune function and is vital for viral replication. Hence, Nsp1 appears to be an attractive target for therapeutics. In this study, we have in silico screened Food and Drug Administration (FDA)-approved drugs against Nsp1-C-ter and find that montelukast sodium hydrate binds to Nsp1-C-ter with a binding affinity (KD) of 10.8{+/-}0.2 M in vitro and forms a stable complex with it in simulation runs with a binding energy of - 76.71{+/-}8.95 kJ/mol. The drug also rescues the inhibitory effect of Nsp1 in host protein synthesis as demonstrated by the expression of firefly luciferase reporter gene in cells. Importantly, montelukast sodium hydrate demonstrates antiviral activity against SARS-CoV-2 with reduced viral replication in HEK cells expressing ACE2 and Vero-E6 cells. We therefore propose montelukast sodium hydrate may help in combatting SARS-CoV-2 infection.
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</div>
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<div class="article-link article-html- link">
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🖺 Full Text HTML: <a href="https://www.biorxiv.org/content/10.1101/2021.11.02.466951v1" target="_blank">Drug targeting Nsp1-ribosomal complex shows antiviral activity against SARS-CoV-2</a>
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</div></li>
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<li><strong>Waning of the Humoral Response to SARS-CoV-2 in Pregnancy is Variant-Dependent</strong> -
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Importance The SARS CoV2 alpha variant posed increased risk for COVID19 complications in pregnant women. However, its impact on the maternal humoral response and placental IgG transport remains unclear. Objective To characterize the maternal humoral waning and neonate immunity acquired during the third COVID19 wave in Israel, dominated by the Alpha variant, as compared to earlier Wildtype infections and humoral response to vaccination across gestation. Design Maternal and fetal blood serum were collected at delivery since April 2020 from parturients. Sera IgG and IgM titers were measured using the Milliplex MAP SARS CoV2 Antigen Panel supplemented with additional HA coupled microspheres. Setting A nationwide multicenter cohort study on SARS CoV2 infections and vaccination during pregnancy. Participants Expectant women presenting for delivery were recruited at 8 medical centers across Israel and assigned to 3 primary groups. 157 SARS CoV2 positive and 125 fully vaccinated during pregnancy, and 212 unvaccinated noninfected controls matched to the infected group by BMI, maternal age, comorbidities and gestational age. Eligibility criteria included pregnant women without active COVID19 disease, age over 18 years and willingness to provide informed consent. Main Outcomes and Measures Pregnant womens humoral response is dependent on the SARS CoV2 strain. Results The humoral response to infection as detected at birth, showed a gradual and significant decline as the interval between infection or vaccination and delivery increased. Significantly faster decay of antibody titers was found for infections occurring during the third wave compared to earlier infection or vaccination. Cord blood IgG antigens levels correlated with maternal IgG. However, cord IgG HA variance significantly differed in SARS CoV2 infections as compared to the other groups. No sexual dimorphism in IgG transfer was observed. Lastly, high fetal IgM response to SARS CoV2 was detected in 17 neonates, all showing elevated IgM to N suggesting exposure to SARS CoV2 antigens. Conclusions and Relevance Infections occurring during the third wave induced a faster decline in humoral response when compared to Wildtype infections or mRNA BNT162b2 vaccination during pregnancy, consistent with a shift in disease etiology and severity induced by the Alpha variant. Vaccination policies in previously infected pregnant women should consider the timing of exposure along pregnancy as well as the risk of infection to specific variants of concern.
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<div class="article-link article-html-link">
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.11.03.21265478v1" target="_blank">Waning of the Humoral Response to SARS-CoV-2 in Pregnancy is Variant-Dependent</a>
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<li><strong>Investigating the relationship between interventions, contact patterns, and SARS-CoV-2 transmissibility</strong> -
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Background After a rapid upsurge of COVID-19 cases in Italy during the fall of 2020, the government introduced a three-tiered restriction system aimed at increasing physical distancing. The Ministry of Health, after periodic epidemiological risk assessments, assigned a tier to each of the 21 Italian regions and autonomous provinces (AP). It is still unclear to what extent these different measures altered mixing patterns and how quickly the population adapted their social interactions to continuous changes in restrictions. Methods and findings We conducted a survey between July 2020 and March 2021 to monitor changes in social contact patterns among individuals in the metropolitan city of Milan, Italy, which was hardly hit by the second wave of COVID-19 pandemic. The number of contacts during periods characterized by different levels of restrictions was analyzed through negative binomial regression models and age-specific contact matrices were estimated under the different tiers. Relying on the empirically estimated mixing patterns, we quantified relative changes in SARS-CoV-2 transmission potential associated with the different tiers. As tighter restrictions were implemented during the fall of 2020, a progressive reduction in the mean number of contacts recorded by study participants was observed: from 16.4% under mild restrictions (yellow tier), to 45.6% under strong restrictions (red tier). Higher restrictions levels were also found to increase the relative contribution of contacts occurring within the household. The SARS-CoV-2 reproduction number was estimated to decrease by 18.7% (95%CI: 4.6-30.8), 33.4% (95%CI: 22.7-43.2), and 50.2% (95%CI: 40.9-57.7) under the yellow, orange, and red tiers, respectively. Conclusions Our results give an important quantification of the expected contribution of different restriction levels in shaping social contacts and decreasing the transmission potential of SARS-CoV-2. These estimates can find an operational use in anticipating the effect that the implementation of these tiered restriction can have on SARS-CoV-2 reproduction number under an evolving epidemiological situation.
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</p>
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</div>
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.11.03.21265876v1" target="_blank">Investigating the relationship between interventions, contact patterns, and SARS-CoV-2 transmissibility</a>
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<li><strong>Hypothyroidism does not lead to worse prognosis in COVID-19: findings from the Brazilian COVID-19 registry</strong> -
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Background: It is not clear whether previous thyroid diseases influence the course and outcomes of COVID-19. The study aims to compare clinical characteristics and outcomes of COVID-19 patients with and without hypothyroidism. Methods: The study is a part of a multicentric cohort of patients with confirmed COVID-19 diagnosis, including data collected from 37 hospitals. Matching for age, sex, number of comorbidities and hospital was performed to select the patients without hypothyroidism for the paired analysis. Results: From 7,762 COVID-19 patients, 526 had previously diagnosed hypothyroidism (50%) and 526 were selected as matched controls. The median age was 70 (interquartile range 59.0-80.0) years-old and 68.3% were females. The prevalence of underlying comorbidities were similar between groups, except for coronary and chronic kidney diseases, that had a higher prevalence in the hypothyroidism group (9.7% vs. 5.7%, p=0.015 and 9.9% vs. 4.8%, p=0.001, respectively). At hospital presentation, patients with hypothyroidism had a lower frequency of respiratory rate > 24 breaths per minute (36.1% vs 42.0%; p=0.050) and need of mechanical ventilation (4.0% vs 7.4%; p=0.016). D-dimer levels were slightly lower in hypothyroid patients (2.3 times higher than the reference value vs 2.9 times higher; p=0.037). In-hospital management was similar between groups, but hospital length-of-stay (8 vs 9 days; p=0.029) and mechanical ventilation requirement (25.4% vs. 33.1%; p=0.006) were lower for patients with hypothyroidism. There was a trend of lower in-hospital mortality in patients with hypothyroidism (22.1% vs. 27.0%; p=0.062). Conclusion: In this large Brazilian COVID-19 Registry, patients with hypothyroidism had a lower requirement of mechanical ventilation, and showed a trend of lower in-hospital mortality. Therefore, hypothyroidism does not seem to be associated with a worse prognosis, and should not be considered among the comorbidities that indicate a risk factor for COVID-19 severity.
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</p>
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</div>
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<div class="article-link article-html-link">
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.11.03.21265685v1" target="_blank">Hypothyroidism does not lead to worse prognosis in COVID-19: findings from the Brazilian COVID-19 registry</a>
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<li><strong>Use cases for COVID-19 screening and surveillance with rapid antigen-detecting tests: a systematic review</strong> -
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Introduction: Testing is critical to controlling the COVID-19 pandemic. Antigen-detecting rapid diagnostic tests (Ag-RDTs) that can be used at the point of care have the potential to increase access to COVID 19 testing, particularly in settings with limited laboratory capacity. This systematic review synthesized literature on specific use cases and performance of Ag RDTs for detecting SARS-CoV-2, for the first comprehensive assessment of Ag RDT use in real-world settings. Methods: We searched three databases (PubMed, EMBASE and medRxiv) up to 12 April 2021 for publications on Ag- RDT use for large-scale screening, irrespective of symptoms, and surveillance of COVID-19, excluding studies of only presumptive COVID-19 patients. We tabulated data on the study setting, populations, type of test, diagnostic performance and operational findings. We assessed risk of bias using QUADAS-2 and an adapted tool for prevalence studies. Results: From 4313 citations, 39 studies conducted in asymptomatic and symptomatic adults were included. Study sample sizes varied from 40 to >5 million. Of 39 studies, 37 (94.9%) investigated lateral flow Ag-RDTs and two (5.1%) investigated multiplex sandwich chemiluminescent enzyme immunoassay Ag-RDTs. Six categories of testing (screening/surveillance) initiatives were identified: mass screening (n=13), targeted screening (n=11), healthcare entry testing (n=6), at-home testing (n=4), surveillance (n=4) and prevalence survey (n=1). Across studies, Ag-RDT sensitivity varied from 40% to 100%. Ag-RDTs were noted as convenient, easy-to-use and low cost, with a rapid turnaround time and high user acceptability. Risk of bias was generally low or unclear across the studies. Conclusion: This systematic review demonstrates the use of Ag-RDTs across a wide range of real-world settings for screening and surveillance of COVID-19 in both symptomatic and asymptomatic individuals. Ag-RDTs were overall found to be easy-to-use, low cost and rapid tools, when consideration is given to their implementation and interpretation. The review was funded by FIND, the global alliance for diagnostics.
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<div class="article-link article-html-link">
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.11.03.21265807v1" target="_blank">Use cases for COVID-19 screening and surveillance with rapid antigen-detecting tests: a systematic review</a>
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</div></li>
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<li><strong>Whole-Blood Methylation Analysis Reveals Respiratory Environmental Functional Pathways Involved in Severity Following SARS-CoV-2 Infection</strong> -
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SARS-CoV-2 causes a severe inflammatory syndrome called COVID-19 that primarily affects the lungs leading, in many cases, to bilateral pneumonia, severe dyspnea and in ~5% of the cases, death. The mechanisms through which this occurs are still being elucidated. A strong relationship between COVID-19 progression and autoimmune disorder pathogenesis has been identified as an exacerbated interferon immune response or an inflammatory condition mediated by an increase of pro-inflammatory cytokine production, among other. DNA methylation is known to regulate immune response processes, thus COVID-19 progression might be also conditioned by DNA methylation changes not studied in depth, yet. Thus, here an epigenome-wide DNA methylation analysis combined with DNA genotyping for 101 and 473 SARS-CoV-2 negative and positive lab tested individuals, respectively, from two different clinical centers is presented in order to evaluate the implications of the epigenetic regulation in the course of COVID-19 disease. The results reveal the existence of an epigenome regulation of functional pathways associated with the COVID-19 progression, such as innate interferon responses, hyperactivation of B and T lymphocytes, phagocytosis and innate C-type lectin DC-SIGN. These DNA methylation changes were found to be regulated by genetic loci associated with COVID-19 susceptibility and autoimmune disease. In mild COVID-19 patients hypomethylation of CpGs regulating genes within the AKT signaling pathway, and the hypermethylation of a group of CpGs related to environmental traits regulating IL-6 expression via the transcription factor CEBP, discriminate these individuals from those who develop the most critical outcomes of the disease. Thus, the analysis points out to an environmental contribution that mediated by DNA methylation changes in SARS-CoV-2 positive patients, might be playing a role in triggering the cytokine storm described in the most severe cases. In addition, important differences were found in terms of epigenetic regulation between severe and mild cases when compared with systemic autoimmune diseases.
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.11.03.21260184v1" target="_blank">Whole-Blood Methylation Analysis Reveals Respiratory Environmental Functional Pathways Involved in Severity Following SARS-CoV-2 Infection</a>
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</div></li>
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<li><strong>The basic reproduction number of COVID-19 across Africa</strong> -
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The pandemic of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) took the world by surprise. Following the first outbreak of COVID-19 in December 2019, several models have been developed to study and understand its transmission dynamics. Although the spread of COVID-19 is being slowed down by vaccination and other interventions, there is still a need to have a clear understanding of the evolution of the pandemic across countries, states and communities. To this end, there is a need to have a clearer picture of the initial spread of the disease in different regions. In this project, we used a simple SEIR model and a Bayesian inference framework to estimate the basic reproduction number of COVID-19 across Africa. Our estimates vary between 1.98 (Sudan) and 9.66 (Mauritius), with a median of 3.67 (90% CrI: 3.31 - 4.12). The estimates provided in this paper will help to inform COVID-19 modeling in the respective countries/regions.
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.11.02.21265826v1" target="_blank">The basic reproduction number of COVID-19 across Africa</a>
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<li><strong>Effectiveness of COVID-19 Vaccines and Post-vaccination SARS-COV 2 Infection, Hospitalization, and Mortality: a Systematic Review and Meta-analysis of Observational Studies</strong> -
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Introduction & Objective: Vaccination is one of the most important and effective ways of preventing infectious diseases, and has recently been used in the COVID-19 epidemic and pandemic. The present meta-analysis study aimed to evaluate the effectiveness of COVID-19 vaccines in reducing the incidence of infection, hospitalization, and mortality in observational studies. Materials and Methods: A systematic search was performed independently in Scopus, PubMed, ProQuest, and Google Scholar electronic databases as well as Preprint servers using the keywords under study. The heterogeneity of the studies was assessed using I2 and χ2 statistics, according to which the I2 of > 50% and P-value <0.1 was reported as heterogeneity of the studies. In addition, the Pooled Vaccine Effectiveness (PVE) obtained from the studies was calculated by converting (1- Pooled estimate * 100%) based on the type of outcome. Results: A total of 54 records were included in this meta-analysis. The rate of PVE against SARS-COV 2 infection was about 71% (OR = 0.29, 95% CI: 0.23-0.36) in the first dose and 87% (OR = 0.13, 95% CI: 0.08-0.21) in the second, and the highest effectiveness in the first and second doses was that of BNT162b2 mRNA and combined studies. The PVE versus COVID-19-associated hospitalization was 73% (OR = 0.27, 95% CI: 0.18-0.41) in the first dose and 89% (OR = 0.11, 95% CI: 0.07-0.17) in the second. mRNA-1273 and combined studies in the first dose and ChAdOx1 and mRNA-1273 in the second dose had the highest effectiveness. Regarding the COVID-19-related mortality, PVE was about 28% (HR = 0.39, 95% CI: 0.23-0.45) in the first dose and 89% (HR = 0.11, 95% CI: 0.03-0.43) in the second. Conclusion: The evidence obtained from this study showed that the effectiveness of BNT162b2 mRNA, mRNA-1273, and ChAdOx1 in the first and second doses, and even combined studies were associated with increased effectiveness against SARS-COV2 infection, hospitalization, and death from COVID-19. In addition, considering that the second dose was significantly more efficient than the first one, a booster dose injection could be effective in high-risk individuals. On the other hand, it was important to observe other prevention considerations in the first days after taking the first dose.
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.11.03.21265819v1" target="_blank">Effectiveness of COVID-19 Vaccines and Post-vaccination SARS-COV 2 Infection, Hospitalization, and Mortality: a Systematic Review and Meta-analysis of Observational Studies</a>
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<li><strong>Determinants of pre-vaccination antibody responses to SARS-CoV-2: a population-based longitudinal study (COVIDENCE UK)</strong> -
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Background: Prospective population-based studies investigating multiple determinants of pre-vaccination antibody responses to SARS-CoV-2 are lacking. Methods: We did a prospective population-based study in SARS-CoV-2 vaccine-naive UK adults between May 1 and Nov 2, 2020. Information on 88 potential risk factors was obtained through online questionnaires, and combined IgG/IgA/IgM responses to SARS-CoV-2 spike glycoprotein were determined in dried blood spots. We used logistic and linear regression to estimate adjusted odds ratios (aORs) and adjusted geometric mean ratios (aGMRs) for potential determinants of SARS-CoV-2 seropositivity (all participants) and antibody titres (seropositive participants only), respectively. Results: 1696 (15.2%) of 11,130 participants were seropositive. Factors independently associated with increased risk included frontline health/care occupation (aOR 1.86, 95% CI 1.49-2.33), international travel (1.22, 1.08-1.37), BMI >30 vs <25 kg/m<sub>2</sub> (1.22, 1.05-1.42), Asian/Asian British vs White ethnicity (1.65, 1.10-2.47), and alcohol consumption ≥15 vs 0 units/week (1.26, 1.06-1.49). Light physical exercise associated with decreased risk (0.80, 0.69-0.93, for ≥10 vs 0-4 h/week). Higher titres associated with frontline health/care occupation (aGMR 1.26, 95% CI 1.13-1.41), international travel (1.10, 1.04-1.16), BMI >30 vs <25 kg/m<sub>2</sub> (1.09, 1.01-1.17), and Asian/Asian British vs White ethnicity (1.23, 1.03-1.46); these associations were not substantially attenuated by adjustment for disease severity. Conclusions: Higher alcohol consumption and reduced physical exercise represent new modifiable risk factors for SARS-CoV-2 infection. Recognised associations between Asian/Asian British ethnic origin and obesity and increased risk of SARS-CoV-2 seropositivity were independent of other sociodemographic, clinical, or behavioural factors investigated.
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.11.02.21265767v1" target="_blank">Determinants of pre-vaccination antibody responses to SARS-CoV-2: a population-based longitudinal study (COVIDENCE UK)</a>
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<li><strong>Multiplex Solid-Phase RPA Coupled CRISPR-Based Visual Detection of SARS-CoV-2</strong> -
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COVID-19 has challenged the world9s public health and led to over 4.5 million deaths. A rapid, sensitive, and cost-effective point-of-care virus detection device is crucial to the control and surveillance of the contagious severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) pandemic. Here we demonstrate a solid phase isothermal recombinase polymerase amplification coupled CRISPR-based (spRPA-CRISPR) assay for on-chip multiplexed, sensitive, and visual COVID-19 DNA detection. By targeting the SARS-CoV-2 structure protein encoded genomes, two specific genes were simultaneously detected with the control sample without cross-interaction with other sequences. The endpoint signal can be directly visualized for rapid detection of COVID-19. The amplified target sequences were immobilized on the one-pot device surface and detected using the mixed Cas12a-crRNA collateral cleavage of reporter released fluorescent signal when specific genes were recognized. The system was tested with samples of a broad range of concentrations (20 to 2x105 copies) and showed analytical sensitivity down to 20 copies per reaction. Furthermore, a low-cost LED UV flashlight (~$12) was used to provide a visible SARS-CoV-2 detection signal of the spRPA-CRISPR assay which could be purchased online easily. Thus, our platform provides a sensitive and easy-to-read multiplexed gene detection method with the capacity to specifically identify low concentration genes. Similar CRISPR biosensor chips can support a broad range of applications such as HPV DNA detection, influenza SARS-CoV-2 multiplex detection, and other infectious disease testing assays.
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.11.02.21265831v1" target="_blank">Multiplex Solid-Phase RPA Coupled CRISPR-Based Visual Detection of SARS-CoV-2</a>
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<li><strong>A RCT of a third dose CoronaVac or BNT162b2 vaccine in adults with two doses of CoronaVac</strong> -
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Background. Poor immunogenicity and antibody waning were found in vaccinees of CoronaVac. There is lack of randomized controlled trial (RCT) data to compare the immunogenicity and safety of schedules using homologous and heterologous vaccine as a booster dose. Methods. We randomly assigned adults who had received 2 doses of CoronaVac with low antibody response to receive an additional booster dose of either BNT162b2 or CoronaVac. The local and systemic adverse reactions were recorded. Levels of SARS-CoV-2 neutralizing and spike binding antibody in plasma were measured. Findings. At one month after the third dose of vaccine, BNT162b2 vaccines elicited significantly higher surrogate virus neutralizing test (sVNT), spike receptor binding, spike N terminal domain binding, spike S2 domain binding levels than CoronaVac. More participants from the BNT162b2 group reported injection site pain and swelling as well as fatigue and muscle pain than those who received CoronaVac as the third dose. The mean results of the sVNT against the wild type, beta, gamma and delta variants in the BNT162b2 boosted group was 96.83%, 92.29%, 92.51% and 95.33% respectively which were significantly higher than the CoronaVac boosted group (Wild type: 57.75%; Beta: 38.79 %; Gamma: 32.22%; Delta: 48.87%) Conclusion. Our RCT study shows that BNT162b2 booster dose for those people who poorly responded to the previous vaccination of CoronaVac is significantly more immunogenic than a CoronaVac booster. BNT162b2 also elicits higher levels of SARS-CoV-2 specific neutralizing antibodies to different variants of concern. The adverse reactions were only mild and short-lived.
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.11.02.21265843v1" target="_blank">A RCT of a third dose CoronaVac or BNT162b2 vaccine in adults with two doses of CoronaVac</a>
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<li><strong>Downsizing of contact tracing during COVID-19 vaccine roll-out</strong> -
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<p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom">
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Contact tracing is a key component of successful management of COVID-19. Contacts of infected individuals are asked to quarantine, which can significantly slow down (or prevent) community spread. Contact tracing is particularly effective when infections are detected quickly (e.g., through rapid testing), when contacts are traced with high probability, when the initial number of cases is low, and when social distancing and border restrictions are in place. However, the magnitude of the individual contribution of these factors in reducing epidemic spread and the impact of vaccination in determining contact tracing outputs is not fully understood. We present a delayed differential equation model to investigate how vaccine roll-out and the relaxation of social distancing requirements affect contact tracing practises. We provide an analytical criteria to determine the minimal contact tracing efficiency (defined as the the probability of identifying and quarantining contacts of symptomatic individuals) required to keep an outbreak under control, with respect to the contact rate and vaccination status of the population. Additionally, we consider how delays in outbreak detection and increased case importation rates affect the number of contacts to be traced daily. We show that in vaccinated communities a lower contact tracing efficiency is required to avoid uncontrolled epidemic spread, and delayed outbreak detection and relaxation of border restrictions do not lead to a significantly higher risk of overwhelming contact tracing. We find that investing in testing programs, rather than increasing the contact tracing capacity, has a larger impact in determining whether an outbreak will be controllable. This is because early detection activates contact tracing, which will slow, and eventually reverse exponential growth, while the contact tracing capacity is a threshold that will easily become overwhelmed if exponential growth is not curbed. Finally, we evaluate quarantine effectiveness during vaccine roll-out, by considering the proportion of people that will develop an infection while in isolation in relation to the vaccination status of the population and for different viral variants. We show that quarantine effectiveness decreases with increasing proportion of fully vaccinated individuals, and increases in the presence of more transmissible variants. These results suggest that a cost-effective approach during vaccine roll-out is to establish different quarantine rules for vaccinated and unvaccinated individuals, where rules should depend on viral transmissibility. Altogether, our study provides quantitative information for contact tracing downsizing during vaccine roll-out, to guide COVID-19 exit strategies.
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</p>
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</div>
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<div class="article-link article-html-link">
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.11.03.21265863v1" target="_blank">Downsizing of contact tracing during COVID-19 vaccine roll-out</a>
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</div></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Black and Native Overdose Mortality Overtook that of White Individuals During the COVID-19 Pandemic</strong> -
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<div>
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<p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom">
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Drug overdose mortality rates have increased sharply during the COVID-19 pandemic. In recent years, overdose death rates were rising most rapidly among racial/ethnic minority communities. The pandemic has disproportionately affected communities of color in a wide swath of health, social, and economic outcomes. Careful attention is therefore warranted to trends in overdose mortality by race/ethnicity during COVID-19. We calculated total drug overdose death rates per 100,000 population by race/ethnicity for the 1999-2020 time period. We find that Black overdose mortality overtook that of White individuals in 2020 for the first time since 1999. Between 2019 and 2020 Black individuals had the largest percent increase in overdose mortality, of 48.8%, compared to 26.3% among White individuals. In 2020, Black overdose death rates rose to 36.8 per 100,000, representing 16.3% higher than the rate for White individuals for the same period. American Indian and Alaska Native (AI/AN) individuals experienced the highest rate of overdose mortality in 2020, of 41.4 per 100,000, representing 30.8% higher than the rate among White individuals. Our findings suggest that drug overdose mortality is increasingly becoming a racial justice issue in the United States and appears to have been exacerbated by the COVID-19 pandemic. Providing individuals with a safer supply of drugs, closing gaps in access to MOUD and harm reductions services, and ending routine incarceration of individuals with substance use disorders represent urgently needed, evidence-based strategies that can be employed to reduce rising inequalities in overdose.
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</p>
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</div></li>
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</ul>
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<div class="article-link article-html-link">
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.11.02.21265668v1" target="_blank">Black and Native Overdose Mortality Overtook that of White Individuals During the COVID-19 Pandemic</a>
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</div>
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<h1 data-aos="fade-right" id="from-clinical-trials">From Clinical Trials</h1>
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<ul>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>COVID-19 Study of Pharmacokinetics, Safety, Tolerability, and Efficacy of Intravenous Anti-Spike(s) SARS-CoV-2 Monoclonal Antibodies (Casirivimab+Imdevimab) for the Treatment of Pediatric Patients Hospitalized Due to COVID-19</strong> - <b>Condition</b>: COVID-19<br/><b>Intervention</b>: Drug: casirivimab+imdevimab<br/><b>Sponsor</b>: <br/>
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Regeneron Pharmaceuticals<br/><b>Not yet recruiting</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Immunogenicity and Safety of Heterologous and Homologous Boosting With ChAdOx1-S and CoronaVac or a Formulation of SCB-2019 (COVID-19)</strong> - <b>Condition</b>: Covid19<br/><b>Interventions</b>: Biological: ChAdOx1-S COVID-19 Vaccine(Fiocruz/Oxford- AstraZeneca); Biological: CoronaVac (Sinovac Biotech); Biological: Adjuvanted Recombinant SARS-CoV-2 TrimericS- protein Subunit Vaccine (SCB-2019 - Clover)<br/><b>Sponsors</b>: D’Or Institute for Research and Education; Bill and Melinda Gates Foundation; Instituto Fernandes Figueira<br/><b>Not yet recruiting</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>JINZHEN for Treatment of Mild to Moderate COVID-19</strong> - <b>Condition</b>: COVID-19<br/><b>Interventions</b>: Drug: JINZHEN Granules for Oral Solution; Drug: Placebo<br/><b>Sponsor</b>: Lianyungang Kanion Group, Ltd.<br/><b>Not yet recruiting</b></p></li>
|
||
<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Effectiveness of Using Interactive Consulting System to Enhance Decision Aids of COVID-19 Vaccination</strong> - <b>Condition</b>: COVID-19<br/><b>Intervention</b>: Device: Chatbot<br/><b>Sponsor</b>: Sun Yat- sen University<br/><b>Recruiting</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Efficacy and Safety of Apixaban in COVID-19 Coagulopathy Patients With Respiratory Severity Under Critical Care</strong> - <b>Condition</b>: COVID-19<br/><b>Intervention</b>: Drug: Apixaban<br/><b>Sponsors</b>: <br/>
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Scotmann Pharmaceuticals; Rawalpindi Medical College<br/><b>Not yet recruiting</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Hypertonic Saline Nasal Irrigation and Gargling (HSNIG) for Suspected COVID-19 in Pakistan</strong> - <b>Condition</b>: COVID-19<br/><b>Intervention</b>: Other: Hypertonic Saline Nasal Irrigation and Gargles (HSNIG)<br/><b>Sponsors</b>: The Allergy and Asthma Institute, Pakistan; University of Edinburgh<br/><b>Recruiting</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Clinical Validation of Breath Analyser Tests for Diagnosis of COVID-19.</strong> - <b>Condition</b>: COVID-19<br/><b>Intervention</b>: Diagnostic Test: Breath Sample analysis<br/><b>Sponsor</b>: Tera Group<br/><b>Recruiting</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>A Study to Evaluate Safety & Immunogenicity of SARS-CoV-2 DNA Vaccine Delivered Intramuscularly Followed by Electroporation for COVID-19</strong> - <b>Condition</b>: Covid19<br/><b>Interventions</b>: Biological: SARS-CoV-2 DNA Vaccine; Biological: Matching placebo<br/><b>Sponsors</b>: The University of Hong Kong; Immuno Cure 3 Limited<br/><b>Not yet recruiting</b></p></li>
|
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Phase 1 Trial of ChAd68 and Ad5 Adenovirus COVID-19 Vaccines Delivered by Aerosol</strong> - <b>Conditions</b>: COVID-19; SARS-CoV2 Infection<br/><b>Interventions</b>: Biological: Ad5-triCoV/Mac; Biological: ChAd-triCoV/Mac<br/><b>Sponsors</b>: McMaster University; Canadian Institutes of Health Research (CIHR)<br/><b>Not yet recruiting</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Homeopathic Treatment of Post-acute COVID-19 Syndrome</strong> - <b>Condition</b>: Post-acute Covid-19 Syndrome<br/><b>Interventions</b>: Drug: Homeopathic Medication; Other: Placebo<br/><b>Sponsors</b>: Southwest College of Naturopathic Medicine; Samueli Institute for Information Biology<br/><b>Recruiting</b></p></li>
|
||
<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Effect of PBM on Functional Capacity and Fatigability in Post Covid-19 Elderly</strong> - <b>Condition</b>: Post Covid-19 Elderly<br/><b>Interventions</b>: Radiation: photobiomodulation; Other: placebo intervention by photobiomodulation device<br/><b>Sponsor</b>: Cairo University<br/><b>Recruiting</b></p></li>
|
||
<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Recombinant SARS-CoV-2 Fusion Protein Vaccine (V-01) Booster Study</strong> - <b>Condition</b>: COVID-19 Pandemic<br/><b>Interventions</b>: Biological: Recombinant SARS-CoV-2 Fusion Protein Vaccine (V-01); Biological: Blank Preparation of Recombinant SARS-CoV-2 Fusion Protein Vaccine (V-01)<br/><b>Sponsor</b>: Livzon Pharmaceutical Group Inc.<br/><b>Not yet recruiting</b></p></li>
|
||
<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Home-based Brain Stimulation Treatment for Post-acute Sequelae of COVID-19 (PASC)</strong> - <b>Condition</b>: Post-Acute Sequelae of COVID-19<br/><b>Interventions</b>: Device: Active tDCS; Device: Sham tDCS<br/><b>Sponsor</b>: Massachusetts General Hospital<br/><b>Not yet recruiting</b></p></li>
|
||
<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>The Effect Of Music On Compliance Of Patients İn COVİD-19 Intensive Care Unit With CPAP Device</strong> - <b>Conditions</b>: COVID-19; COVID-19 Acute Respiratory Distress Syndrome<br/><b>Intervention</b>: Device: Listening to music with a bluetooth headset to patients receiving CPAP support<br/><b>Sponsors</b>: SÜMEYYE BİLGİLİ; Ataturk University<br/><b>Recruiting</b></p></li>
|
||
<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>The Efficacy of Vitamin D Supplementation in Patients With Severe and Extremely Severe COVID-19</strong> - <b>Condition</b>: SARS-CoV2 Infection<br/><b>Intervention</b>: Dietary Supplement: Vitamin D (cholecalciferol)<br/><b>Sponsor</b>: Federal Research Clinical Center of Federal Medical & Biological Agency, Russia<br/><b>Recruiting</b></p></li>
|
||
</ul>
|
||
<h1 data-aos="fade-right" id="from-pubmed">From PubMed</h1>
|
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<ul>
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||
<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Sensing of cytoplasmic chromatin by cGAS activates innate immune response in SARS-CoV-2 infection</strong> - The global coronavirus disease 2019 (COVID-19) pandemic is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), a positive-sense RNA virus. How the host immune system senses and responds to SARS-CoV-2 infection remain largely unresolved. Here, we report that SARS-CoV-2 infection activates the innate immune response through the cytosolic DNA sensing cGAS-STING pathway. SARS-CoV-2 infection induces the cellular level of 2’3’-cGAMP associated with STING activation. cGAS…</p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>A non-ACE2 competing human single-domain antibody confers broad neutralization against SARS-CoV-2 and circulating variants</strong> - The current COVID-19 pandemic has heavily burdened the global public health system and may keep simmering for years. The frequent emergence of immune escape variants have spurred the search for prophylactic vaccines and therapeutic antibodies that confer broad protection against SARS-CoV-2 variants. Here we show that the bivalency of an affinity maturated fully human single-domain antibody (n3113.1-Fc) exhibits exquisite neutralizing potency against SARS-CoV-2 pseudovirus, and confers effective…</p></li>
|
||
<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Auranofin: Past to Present, and repurposing</strong> - Auranofin (AF), a gold compound, has been used to treat rheumatoid arthritis (RA) for more than 40 years; however, its mechanism of action remains unknown. We revealed that AF inhibited the induction of proinflammatory proteins and their mRNAs by the inflammatory stimulants, cyclooxygenase-2 and inducible nitric oxide synthase, and their upstream regulator, NF-κB. AF also activated the proteins peroxyredoxin-1, Kelch-like ECH-associated protein 1, and NF-E2-related factor 2, and inhibited…</p></li>
|
||
<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Methotrexate as a safe immunosuppressive agent during the COVID-19 pandemic</strong> - CONCLUSION: The present findings demonstrated that methotrexate does not predispose patients to severe COVID-19; on the contrary, patients taking methotrexate may experience a milder disease, possibly due to their reduced severe inflammatory reactions as a result of inhibited TNFα, lowered IL6, and increased T regulatory cells. According to these findings, methotrexate appears to be a suitable treatment option for patients who need immunosuppressive medications during the COVID-19 pandemic.</p></li>
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||
<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>An airway organoid-based screen identifies a role for the HIF1alpha-glycolysis axis in SARS-CoV-2 infection</strong> - It is urgent to develop disease models to dissect mechanisms regulating severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. Here, we derive airway organoids from human pluripotent stem cells (hPSC-AOs). The hPSC-AOs, particularly ciliated-like cells, are permissive to SARS-CoV-2 infection. Using this platform, we perform a high content screen and identify GW6471, which blocks SARS-CoV-2 infection. GW6471 can also block infection of the B.1.351 SARS- CoV-2 variant. RNA…</p></li>
|
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>New tale on LianHuaQingWen: IL6R/IL6/IL6ST complex is a potential target for COVID-19 treatment</strong> - LianHuaQingWen (LHQW) improves clinical symptoms and alleviates the severity of COVID-19, but the mechanism is unclear. This study aimed to investigate the potential molecular targets and mechanisms of LHQW in treating COVID-19 using a network pharmacology-based approach and molecular docking analysis. The main active ingredients, therapeutic targets of LHQW, and the pathogenic targets of COVID-19 were screened using the TCMSP, UniProt, STRING, and GeneCards databases. According to the…</p></li>
|
||
<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Potent Anti-SARS-CoV-2 Activity by the Natural Product Gallinamide A and Analogues via Inhibition of Cathepsin L</strong> - Cathepsin L is a key host cysteine protease utilized by coronaviruses for cell entry and is a promising drug target for novel antivirals against SARS-CoV-2. The marine natural product gallinamide A and several synthetic analogues were identified as potent inhibitors of cathepsin L with IC(50) values in the picomolar range. Lead molecules possessed selectivity over other cathepsins and alternative host proteases involved in viral entry. Gallinamide A directly interacted with cathepsin L in cells…</p></li>
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||
<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Dasabuvir Inhibits Human Norovirus Infection in Human Intestinal Enteroids</strong> - Human noroviruses (HuNoVs) are acute viral gastroenteritis pathogens that affect all age groups, yet no approved vaccines and drugs to treat HuNoV infection are available. In this study, we screened an antiviral compound library to identify compound(s) showing anti-HuNoV activity using a human intestinal enteroid (HIE) culture system in which HuNoVs are able to replicate reproducibly. Dasabuvir (DSB), which has been developed as an anti-hepatitis C virus agent, was found to inhibit HuNoV…</p></li>
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||
<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Microbial based natural compounds as potential inhibitors for SARS-CoV-2 Papain-like protease (PLpro): a molecular docking and dynamic simulation study</strong> - COVID-19 (Coronavirus disease of 2019) pandemic is one of the largest health threats the planet has faced in recent decades. Efforts are being continuously made to design a viable drug or a vaccine. Several natural and synthetic molecules are under study for their potency to inhibit viral replication. In order to emphasize the importance of microbial-based natural components in antiviral drug discovery, an attempt has been made through this study to find potential inhibitors for SARS-CoV-2…</p></li>
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||
<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Rapid inactivation of SARS-CoV-2 with LED irradiation of visible spectrum wavelengths</strong> - Difficulty in controlling SARS-CoV-2 transmission made the ability to inactivate viruses in aerosols and fomites to be an important and attractive risk reduction measure. Evidence that light frequencies have the ability to inhibit microorganisms has already been reported by many studies which, however, focused on ultraviolet (UV) wavelengths, which are known to induce potential injury in humans. In the present study, the effect on suspensions of SARS-CoV-2 of a Light Emitting Diode (LED) device…</p></li>
|
||
<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Potential Dietary Interventions for COVID-19 Infection Based on the Gut-Immune Axis: An Update Review on Bioactive Component of Macronutrients</strong> - Recently emerged coronavirus, known as SARS-CoV-2 or Covid-19 is considered as a serious threat for human health. Due to unavailable specific drugs for this virus, there is an urgent need for supportive cares. Epigenetic immune boosting approaches and developing anti-inflammatory agents by gut-associated bioactive macronutrients can be plausible protective cares for COVID-19. Suitable intake of bioactive macronutrients including prebiotics, fatty acids, proteins and branched-chain amino acids…</p></li>
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||
<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>In silico identification of potential inhibitors against main protease of SARS-CoV-2 6LU7 from Andrographis panniculata via molecular docking, binding energy calculations and molecular dynamics simulation studies</strong> - CONCLUSION: In conclusion, findings of the current study suggest that selected diterpenoids were predicted to be the significant phytonutrient-based inhibitor against SARS-CoV-2 6LU7 (M^(pro)). However, preclinical and clinical trials are needed for the further scientific validation before use.</p></li>
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||
<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Broad spectrum antiviral nucleosides-Our best hope for the future</strong> - The current focus for many researchers has turned to the development of therapeutics that have the potential for serving as broad-spectrum inhibitors that can target numerous viruses, both within a particular family, as well as to span across multiple viral families. This will allow us to build an arsenal of therapeutics that could be used for the next outbreak. In that regard, nucleosides have served as the cornerstone for antiviral therapy for many decades. As detailed herein, many nucleosides…</p></li>
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||
<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Hemin as a novel candidate for treating COVID-19 via heme oxygenase-1 induction</strong> - Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the causative agent of the coronavirus disease-19 (COVID-19). More than 143 million cases of COVID-19 have been reported to date, with the global death rate at 2.13%. Currently, there are no licensed therapeutics for controlling SARS-CoV-2 infection. The antiviral effects of heme oxygenase-1 (HO-1), a cytoprotective enzyme that inhibits the inflammatory response and reduces oxidative stress, have been investigated in several viral…</p></li>
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||
<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Protease Inhibitors as Promising Weapons against COVID-19: Focus on Repurposing of Drugs used to Treat HIV and HCV Infections</strong> - As a part of the efforts to quickly develop pharmaceutical treatments for COVID-19 through repurposing existing drugs, some researchers around the world have combined the recently released crystal structure of SARS-CoV-2 M^(pro) in complex with a covalently bonded inhibitor with virtual screening procedures employing molecular docking approaches. In this context, protease inhibitors (PIs) clinically available and currently used to treat infectious diseases, particularly viral ones, are relevant…</p></li>
|
||
</ul>
|
||
<h1 data-aos="fade-right" id="from-patent-search">From Patent Search</h1>
|
||
<ul>
|
||
<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Anti-SARS-CoV-2 antibodies and uses thereof I</strong> - - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=AU339290405">link</a></p></li>
|
||
<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Anti-SARS-CoV-2 antibodies and uses thereof II</strong> - - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=AU339290406">link</a></p></li>
|
||
<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>휴대용 자화 육각수물 발생기</strong> - 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.</p></li>
|
||
</ul>
|
||
<p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom">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. - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=KR338655754">link</a></p>
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<ul>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>휴대용 자화 육각수물 발생기</strong> - 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. - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=KR338650904">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>用于检测新冠病毒的配对抗体及其应用</strong> - 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。 - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=CN339127990">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>抗KL-6双特异性抗体及基因、重组载体、药物、试剂盒</strong> - 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。 - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=CN338723529">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>基于决策树模型与逻辑回归模型组合的感染筛查方法</strong> - 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。 - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=CN339127711">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>病毒中和抗体与非中和抗体联合检测方法、检测卡及应用</strong> - 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。 - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=CN338613501">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>扩增△500-532的SARS-CoV-2 Nsp1基因的引物对及其检测方法</strong> - 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。 - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=CN339334235">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>多肽及其在新型冠状病毒检测中的应用</strong> - 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。 - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=CN339334229">link</a></p></li>
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