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<meta content="width=device-width, initial-scale=1.0, user-scalable=yes" name="viewport"/>
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<title>06 September, 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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<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>Immunogenicity and Safety of the inactivated SARS-CorV-2 vaccine (BBIBP-CoV) in patients with malignancy</strong> -
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Objective: Patients with malignancy suffer from a compromised immune system due to either the effects of malignancies or treatments. Cancer patients are at higher risk of different infections particularly SARS-CoV2 and usually produce weaker response to vaccines. The aim of this study was to evaluate the safety and immunogenicity of the inactivated SARS-CoV-2 vaccine (Sinopharm, BBIBP-CoV) in patients with malignancy. Material and Method: In total 364 patients with cancer (median age: 54 years old, F/M ratio: 217/147) who received two doses of Sinopharm vaccine were enrolled in this study. Vaccine related side effects was assessed by a questionnaire and the presence of SARS-CoV-2 anti-Spike protein (S) IgG and neutralizing antibody two months following vaccination were measured by immunological methods. Results: Injection site pain and fever were the most common local and systemic side effects in vaccine receivers. Two months after the first dose, anti-S IgG and neutralizing antibody were detectable in 77.1% and 80.7% of all participants, respectively with an overall response to either or both measured in 86.9% of patients The rate of seroconversion was lower in older age, those with hematological malignancies and chemotherapy receivers. Conclusion: The result of study confirmed the safety and short-term efficacy of Sinopharm inactivated vaccine (BBIBP-CorV) in patients with different type of malignancies.
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.09.02.21262760v2" target="_blank">Immunogenicity and Safety of the inactivated SARS-CorV-2 vaccine (BBIBP-CoV) in patients with malignancy</a>
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</div></li>
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<li><strong>National Excess Mortality from Sub-National data: Method and Application for Argentina</strong> -
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Currently, many countries have not yet reported 2020 or 2021 mortality data to allow an estimate of excess mortality during the COVID-19 pandemic. However, some countries have sub-national mortality data, at the state, province or city level. I present a simple method to allow estimation of national level mortality and excess mortality from sub- national data, using the case of Argentina and projecting excess mortality up to August 2021.
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.08.30.21262814v2" target="_blank">National Excess Mortality from Sub- National data: Method and Application for Argentina</a>
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</div></li>
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<li><strong>Mid-Regional pro-Adrenomedullin (MR-proADM), C-Reactive Protein (CRP) and Other Biomarkers in the Early Identification of Disease Progression in COVID-19 Patients in the Acute NHS Setting</strong> -
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Aims: There is a lack of biomarkers validated for assessing clinical deterioration in COVID-19 patients upon presentation to secondary or tertiary care. This evaluation looked at the potential clinical application of C-Reactive Protein, Procalcitonin, Mid-Regional pro-adrenomedullin (MR-proADM) and White Cell Count to support prediction of clinical outcomes. Methods: 135 patients presenting to Hampshire Hospitals NHS Foundation Trust between April and June 2020 confirmed to have COVID-19 via RT-qPCR were included. Biomarkers from within 24 hours of admission were used to predict disease progression by Cox regression and area under the receiver operating characteristic (AUROC) curves. The endpoints assessed were 30-day all-cause mortality, intubation and ventilation, critical care admission and non-invasive ventilation (NIV) use. Results: Elevated MR-proADM was shown to have the greatest ability to predict 30-day mortality adjusting for age, cardiovascular, renal and neurological disease. A significant association was also noted between raised MR-proADM and CRP concentrations and the requirement for critical care admission and non-invasive ventilation. Conclusions: The measurement of MR-proADM and CRP in patients with confirmed COVID-19 infection upon admission shows significant potential to support clinicians in identifying those at increased risk of disease progression and need for higher level care, subsequently enabling prompt escalation in clinical interventions.
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.04.19.21252978v2" target="_blank">Mid-Regional pro-Adrenomedullin (MR-proADM), C-Reactive Protein (CRP) and Other Biomarkers in the Early Identification of Disease Progression in COVID-19 Patients in the Acute NHS Setting</a>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Efficacy of remdesivir in hospitalised COVID-19 patients in Japan: A large observational study using the COVID-19 Registry Japan</strong> -
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Objectives: Although several randomised controlled trials have compared the efficacy of remdesivir with that of placebo, there is limited evidence regarding its effect in the early stage of nonsevere COVID-19 cases. Methods: We evaluated the efficacy of remdesivir on the early stage of nonsevere COVID-19 using the COVID-19 Registry Japan, a nationwide registry of hospitalised COVID-19 patients in Japan. Two regimens (start remdesivir therapy within 4 days from admission vs. no remdesivir during hospitalisation) among patients without the need for supplementary oxygen therapy were compared by a three-step processing (cloning, censoring, and weighting) method. The primary outcome was supplementary oxygen requirement during hospitalisation. Secondary outcomes were 30-day fatality risk and risk of invasive mechanical ventilation or extracorporeal membrane oxygenation (IMV/ECMO). Results: The data of 12,657 cases met our inclusion criteria. The start remdesivir regimen showed a lower risk of supplementary oxygen requirement (hazard ratio: 0.861, p < 0.001). Both 30-day fatality risk and risk of IMV/ECMO introduction were not significantly different between the two regimens (hazard ratios: 1.05 and 0.886, p values: 0.070 and 0.440, respectively). Conclusions: Remdesivir might reduce the risk of oxygen requirement during hospitalisation in the early stage of COVID-19; however, it had no positive effect on the clinical outcome and reduction of IMV/ECMO requirement.
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.03.09.21253183v2" target="_blank">Efficacy of remdesivir in hospitalised COVID-19 patients in Japan: A large observational study using the COVID-19 Registry Japan</a>
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<li><strong>The New, COVID-Driven Outdoor Recreationists in the U.S.: Who They Are, Who They Aren’t, and Who Will Stay Involved</strong> -
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As the COVID-19 pandemic spread across the United States, many residents began participating in outdoor recreation for the first time, or returned to outdoor recreation after a prolonged hiatus. During the first year of the pandemic, many parks in the U.S. experienced record visitation as overall park and protected area visitation increased across much of the country. Part of this increase in visitation was likely the result of existing outdoor recreationists who increased their participation during the first year of the pandemic because of restrictions to other types of leisure activities. However, it is possible that much of the increase in outdoor recreation and park use was the result of a recreation substitution, as new outdoor recreationists either tried outdoor recreation for the first time or returned to outdoor recreation because they could not do their more preferred means of recreational activities (e.g., go to bars, movies, gyms, etc.). Research concerning these new participants is sparse at present (Grima et al., 2020; Outdoor Industry Association & Naxion Research Consulting, 2021). Therefore, the research detailed in this report focuses on the results of a national panel study aimed at gaining a more robust understanding of both 1) how these new outdoor recreationists differ from other participants and non-participants and 2) the behaviors of these new outdoor recreationists. In doing so, we provide insights concerning information used by new participants to aid their transition to outdoor recreation, how helpful this information was, what activities they participated in, where they participated in these activities, and if they plan to continue participating once the pandemic is over.
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🖺 Full Text HTML: <a href="https://osf.io/preprints/socarxiv/3khfd/" target="_blank">The New, COVID-Driven Outdoor Recreationists in the U.S.: Who They Are, Who They Aren’t, and Who Will Stay Involved</a>
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<li><strong>Elevation of Neurodegenerative Serum Biomarkers among Hospitalized COVID-19 Patients</strong> -
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INTRODUCTION: Older adults hospitalized with COVID-19 are susceptible to neurological complications, particularly encephalopathy, which may reflect age-related neurodegenerative processes. METHODS: Serum total tau, ptau-181, GFAP, NFL, UCHL1, and amyloid-beta(AB-40,42) were measured in hospitalized COVID-19 patients without a history of dementia, and compared among patients with or without encephalopathy, in-hospital death versus survival, and discharge home versus other dispositions using multivariable Cox proportional hazards regression analyses. RESULTS: Among 251 patients, admission serum ptau-181 and UCHL1 were significantly elevated in patients with encephalopathy (both P<0.05) and total tau, GFAP, and NFL were significantly lower in those discharged home(all P<0.05). These markers correlated significantly with severity of COVID illness. NFL, GFAP and UCH-L1 were significantly higher in hospitalized COVID patients than in non-COVID controls with mild cognitive impairment or Alzheimer9s disease(AD). DISCUSSION: Age- related neurodegenerative biomarkers were elevated to levels observed in AD and associated with encephalopathy and worse outcomes among hospitalized COVID-19 patients.
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.09.01.21262985v1" target="_blank">Elevation of Neurodegenerative Serum Biomarkers among Hospitalized COVID-19 Patients</a>
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<li><strong>Expected Rates of Select Adverse Events following Immunization for COVID-19 Vaccine Safety Monitoring</strong> -
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Background: Knowledge of expected rates of potential adverse events of special interest (AESI) that may occur coincidentally following COVID-19 vaccination is essential for vaccine safety surveillance and assessment. We calculated the expected rates of 21 potential AESI following COVID-19 vaccination among vaccinated persons within 1 day, 7 days, and 42 days of vaccination. Methods: We used meta-analytic methods to estimate background rates of 21 medical conditions considered potential AESI and calculated expected rates of each potential AESI within 1 day, 7 days, and 42 days of vaccination. Results: Background rates of three commonly monitored AESI, Guillain-Barre syndrome (GBS), myopericarditis, and all-cause deaths were 2.0 GBS cases/100,000 person-years, 1.3 myopericarditis cases/100,000 person-years, and 863.8 all-cause deaths/100,000 person-years, respectively. Based on these background rates, if 10,000,000 persons are vaccinated, we would expect 0.5, 3.7, and 22.5 GBS cases; 0.3, 2.4, and 14.3 myopericarditis cases; and 236.5, 1655.5, and 9932.8 all-cause deaths to occur in coincident temporal association (i.e., as a result of background incidence) within 1 day, 7 days, and 42 days of vaccination, respectively. Conclusion: Knowledge of expected rates of potential AESI can help contextualize adverse health events associated temporally with immunization, aid in safety signal detection, guide COVID-19 vaccine public health communication, and inform benefit-risk assessments of COVID-19 vaccines.
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.08.31.21262919v1" target="_blank">Expected Rates of Select Adverse Events following Immunization for COVID-19 Vaccine Safety Monitoring</a>
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<li><strong>MITIGATING THE 4th WAVE OF THE COVID-19 PANDEMIC IN ONTARIO</strong> -
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Background: The goal of this study was to project the number of COVID-19 cases and demand for acute hospital resources for Fall of 2021 in a representative mid-sized community in southwestern Ontario. We sought to evaluate whether current levels of vaccine coverage and contact reduction could mitigate a potential 4th wave fueled by the Delta variant, or whether the reinstitution of more intense public health measures will be required. Methods: We developed an age-stratified dynamic transmission model of COVID-19 in a mid-sized city (population 500,000) currently experiencing a relatively low, but increasing, infection rate in Step 3 of Ontario9s Wave 3 recovery. We parameterized the model using the medical literature, grey literature, and government reports. We estimated the current level of contact reduction by model calibration to cases and hospitalizations. We projected the number of infections, number of hospitalizations, and the time to re-instate high intensity public health measures over the fall of 2021 under different levels of vaccine coverage and contact reduction. Results: Maintaining contact reductions at the current level, estimated to be a 17% reduction compared to pre-pandemic contact levels, results in COVID-related admissions exceeding 20% of pre-pandemic critical care capacity by late October, leading to cancellation of elective surgeries and other non-COVID health services. At high levels of vaccination and relatively high levels of mask wearing, a moderate additional effort to reduce contacts (30% reduction compared to pre-pandemic contact levels), is necessary to avoid re-instating intensive public health measures. Compared to prior waves, the age distribution of both cases and hospitalizations shifts younger and the estimated number of pediatric critical care hospitalizations may substantially exceed 20% of capacity. Discussion: High rates of vaccination coverage in people over the age of 12 and mask wearing in public settings will not be sufficient to prevent an overwhelming resurgence of COVID-19 in the Fall of 2021. Our analysis indicates that immediate moderate public health measures can prevent the necessity for more intense and disruptive measures later.
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.09.02.21263000v1" target="_blank">MITIGATING THE 4th WAVE OF THE COVID-19 PANDEMIC IN ONTARIO</a>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>No difference in risk of hospitalisation between reported cases of the SARS-CoV-2 Delta variant and Alpha variant in Norway</strong> -
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Objectives To estimate the risk of hospitalisation among reported cases of the Delta-variant of SARS-CoV-2 compared to the Alpha variant in Norway. We also estimated the risk of hospitalisation by vaccination status. Methods We conducted a cohort study on laboratory-confirmed cases of SARS-CoV-2 in Norway, diagnosed between 3 May and 15 August</p></div></li>
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<li>We calculated adjusted risk ratios (aRR) with 95% confidence intervals (CIs) using multivariable binomial regression, accounting for variant, vaccination status, demographic characteristics, week of sampling and underlying comorbidities. Results We included 7,977 cases of Delta and 12,078 cases of Alpha. Overall, 347 (1.7%) cases were hospitalised. The aRR of hospitalisation for Delta compared to Alpha was 0.97 (95%CI 0.76-1.23). Partially vaccinated cases had a 72% reduced risk of hospitalisation (95%CI 59%-82%), and fully vaccinated cases had a 76% reduced risk (95%CI 61%-85%), compared to unvaccinated cases. Conclusions We found no difference in the risk of hospitalisation for Delta cases compared to Alpha cases in Norway. Further research from a wide variety of settings is needed to better understand the association between the Delta variant and severe disease. Our results support the notion that partially and fully vaccinated persons are highly protected against hospitalisation with COVID-19.
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.09.02.21263014v1" target="_blank">No difference in risk of hospitalisation between reported cases of the SARS-CoV-2 Delta variant and Alpha variant in Norway</a>
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<li><strong>National Population-Level Disparities in COVID-19 Mortality Across the Intersection of Race/Ethnicity and Sex in the United States</strong> -
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Males and certain racial/ethnic minority groups have borne a disproportionate burden of COVID-19 mortality in the United States, and substantial scientific research has sought to quantify and characterize population-level disparities in COVID-19 mortality outcomes by sex and across categories of race/ethnicity. However, there has not yet been a national population-level study to quantify disparities in COVID-19 mortality outcomes across the intersection of these demographic dimensions. Here, we analyze a publicly available dataset from the National Center for Health Statistics comprising COVID-19 death counts stratified by race/ethnicity, sex, and age for the year 2020, calculating mortality rates for each race/ethnicity-sex-age stratum and age-adjusted mortality rates for each race/ethnicity-sex stratum, quantifying disparities in terms of mortality rate ratios and rate differences. Our results reveal persistently higher COVID-19 age-adjusted mortality rates for males compared to females within every racial/ethnic group, with notable variation in the magnitudes of the sex disparity by race/ethnicity. However, non-Hispanic Black, Hispanic, and non-Hispanic American Indian or Alaska Native females have higher age-adjusted mortality rates than non-Hispanic White and non-Hispanic Asian/Pacific Islander males. Moreover, persistent racial/ethnic disparities are observed among both males and females, with higher COVID-19 age-adjusted mortality rates observed for non-Hispanic Blacks, Hispanics, and non-Hispanic American Indian or Alaska Natives relative to non-Hispanic Whites.
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.08.29.21262775v1" target="_blank">National Population-Level Disparities in COVID-19 Mortality Across the Intersection of Race/Ethnicity and Sex in the United States</a>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Monitoring populations at increased risk for SARS-CoV-2 infection in the community</strong> -
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Background: The COVID-19 pandemic is rapidly evolving, with emerging variants and fluctuating control policies. Real-time population screening and identification of groups in whom positivity is highest could help monitor spread and inform public health messaging and strategy. Methods: To develop a real-time screening process, we included results from nose and throat swabs and questionnaires taken 19 July 2020-17 July 2021 in the UK9s national COVID-19 Infection Survey. Fortnightly, associations between SARS-CoV-2 positivity and 60 demographic and behavioural characteristics were estimated using logistic regression models adjusted for potential confounders, considering multiple testing, collinearity, and reverse causality. Findings: Of 4,091,537 RT-PCR results from 482,677 individuals, 29,903 (0.73%) were positive. As positivity rose September-November 2020, rates were independently higher in younger ages, and those living in Northern England, major urban conurbations, more deprived areas, and larger households. Rates were also higher in those returning from abroad, and working in healthcare or outside of home. When positivity peaked December 2020-January 2021 (Alpha), high positivity shifted to southern geographical regions. With national vaccine roll-out from December 2020, positivity reduced in vaccinated individuals. Associations attenuated as rates decreased between February-May</p></div></li>
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<li>Rising positivity rates in June-July 2021 (Delta) were independently higher in younger, male, and unvaccinated groups. Few factors were consistently associated with positivity. 25/45 (56%) confirmed associations would have been detected later using 28-day rather than 14-day periods. Interpretation: Population-level demographic and behavioural surveillance can be a valuable tool in identifying the varying characteristics driving current SARS-CoV-2 positivity, allowing monitoring to inform public health policy. Funding: Department of Health and Social Care (UK), Welsh Government, Department of Health (on behalf of the Northern Ireland Government), Scottish Government, National Institutes of Health Research.
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.09.02.21263017v1" target="_blank">Monitoring populations at increased risk for SARS-CoV-2 infection in the community</a>
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<li><strong>The comparability of Anti-Spike SARS-CoV-2 antibody tests is time-dependent: a prospective observational study</strong> -
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Objectives Various commercial anti-Spike SARS-CoV-2 antibody tests are used for studies and in clinical settings after vaccination. An international standard for SARS-CoV-2 antibodies has been established to achieve comparability of such tests, allowing conversions to BAU/ml. This study aimed to investigate the comparability of antibody tests regarding the timing of blood collection after vaccination. Methods For this prospective observational study, antibody levels of 50 participants with homologous AZD1222 vaccination were evaluated at 3 and 11 weeks after the first dose and 3 weeks after the second dose using two commercial anti-Spike binding antibody assays (Roche and Abbott) and a surrogate neutralization assay (sVNT). Results The correlation between Roche and Abbott changed significantly depending on the time point studied. Although 3 weeks after the first dose, Abbott provided values three times higher than Roche, 11 weeks after the first dose, the values for Roche were twice as high as for Abbott, and 3 weeks after the second dose even 5-6 times higher. Conclusions The comparability of quantitative anti-Spike SARS-CoV-2 antibody tests is highly dependent on the timing of blood collection after vaccination. Therefore, standardization of the timing of blood collection might be necessary for the comparability of different quantitative SARS-COV-2 antibody assays.
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.08.26.21262426v1" target="_blank">The comparability of Anti-Spike SARS-CoV-2 antibody tests is time-dependent: a prospective observational study</a>
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<li><strong>Comparative quantitative analysis of SARS-CoV-2 Spike neutralizing antibody titers following two anti COVID-19 vaccines in India</strong> -
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In COVID 19 pandemic, first line of defense is effective vaccination program. Because of multiple platforms available for vaccine production we tested relative immunogenicity of two vaccines available in India, Covaxin and Covishield We performed quantitative analysis of neutralizing antibodies to SARS Cov2 spike (receptor binding domain ) protein, from sera of 53 subjects who completed vaccines schedules. There was significantly higher immunogenic response with Covishield as compared to Covaxin and are independent of age. Studies on a large scale with long term follow up are needed to further advance the knowledge in this domain.
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.08.28.21262753v1" target="_blank">Comparative quantitative analysis of SARS-CoV-2 Spike neutralizing antibody titers following two anti COVID-19 vaccines in India</a>
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<li><strong>The association between SARS-CoV-2 infection and neuronal damage: A population-based nested case-control study</strong> -
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Objective: To assess whether severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection is associated with changes in plasma levels of neurofilament light chain (NfL), an extremely sensitive marker of neuroaxonal damage, in community-dwelling individuals. Setting: This study was embedded within the Rhineland Study, an ongoing community-based cohort study in Bonn, Germany Design: Cross-sectional nested case-control study. Participants: Participants were selected based on results from a previously conducted seroprevalence survey within the framework of the Rhineland Study. Cases were defined as those individuals who had had two positive confirmatory test results, including a recombinant spike-based immunofluorescence assay and a plaque reduction neutralization test (N=21). As controls, a random sample of individuals with a negative ELISA test result (Controls I, N=1117), and those with a borderline or positive ELISA test result who failed confirmatory testing (Controls II, N=68), were selected. Outcome measures: Plasma levels of NfL at the time of measurement, as well as change in plasma NfL levels compared to previously measured pre-pandemic levels Results: After adjustment for age, sex and batch effects, serologically confirmed SARS-CoV-2 infection was neither associated with cross-sectional NfL levels, nor with the magnitude of change from pre-pandemic levels, compared to either of the two control groups. Similarly, after adjustment for age, sex and batch effects, self-reported neurological symptoms (including altered sense of smell or taste, headache, myalgia and fever) were not associated with changes in NfL levels in participants with a serologically confirmed SARS-CoV-2 infection (all p ≥ 0.56). Conclusions: Our findings indicate that mild-to-moderate coronavirus disease-19 is unlikely to be associated with a clinically relevant degree of neuroaxonal damage, even in those cases associated with neurological symptoms.
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.09.02.21263019v1" target="_blank">The association between SARS-CoV-2 infection and neuronal damage: A population-based nested case-control study</a>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>How Informative were Early SARS-CoV-2 Treatment and Prevention Trials? A longitudinal cohort analysis of trials registered on clinicaltrials.gov</strong> -
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<b>Background</b> Early in the SARS-CoV-2 pandemic, commentators warned that some COVID trials were inadequately conceived, designed and reported. Here, we retrospectively assess the prevalence of informative COVID trials launched in the first 6 months of the pandemic. <b>Methods</b> We created a cohort of SARS-CoV-2 treatment and prevention efficacy trials that were initiated from 2020-01-01 to 2020-06-30 using ClinicalTrials.gov registration records. We evaluated trials on 3 criteria of informativeness: potential redundancy, design quality and feasibility of patient- participant recruitment. The study protocol was prospectively registered with the Open Science Framework (https://osf.io/fp726/). <b>Results</b> We included 500 trials in our cohort, 58% of which were Phase 2 and 84.8% were directed towards the treatment of SARS-CoV-2. Close to one third of trials met all three criteria and were deemed informative (29.0% (95% Confidence Interval 23.7-36.9)). The proportion of potentially redundant trials in our cohort was 4.1%. Over half of the trials in our cohort (56.2%) did not meet our criteria for high quality trial design. The proportion of trials with infeasible patient-participant recruitment was 22.6%. <b>Conclusions</b> Less than one third of COVID-19 trials registered on ClinicalTrials.gov during the first six months met all three criteria for informativeness. Shortcomings in trial design, recruitment feasibility and redundancy reflect longstanding weaknesses in the clinical research enterprise that were likely amplified by the exceptional circumstances of a pandemic.
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.08.25.21262155v1" target="_blank">How Informative were Early SARS- CoV-2 Treatment and Prevention Trials? A longitudinal cohort analysis of trials registered on clinicaltrials.gov</a>
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<h1 data-aos="fade-right" id="from-clinical-trials">From Clinical Trials</h1>
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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>High-dose Intravenous Vitamin C (HDIVC) as Adjuvant Therapy in Critical Patients With Positive COVID-19. A Pilot Randomized Controlled Dose-comparison Trial.</strong> - <b>Condition</b>: Covid19<br/><b>Interventions</b>: Drug: High doses of intravenous vitamin C; Drug: Dextrose 500 mL<br/><b>Sponsor</b>: Hugo Galindo<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>Developing and Testing a COVID-19 Vaccination Acceptance Intervention</strong> - <b>Condition</b>: COVID-19 Vaccination<br/><b>Intervention</b>: Behavioral: Moving to COVID-19 Vaccine Acceptance Intervention<br/><b>Sponsors</b>: VA Office of Research and Development; VA Bedford Healthcare System<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>Study on Safety and Clinical Efficacy of AZVUDINE in Initial Stage COVID-19 Patients (SARS-CoV-2 Infected)</strong> - <b>Condition</b>: COVID-19<br/><b>Interventions</b>: Drug: AZVUDINE; Drug: AZVUDINE placebo<br/><b>Sponsors</b>: HRH Holdngs Limited; GALZU INSTITUTE OF RESEARCH, TEACHING, APPLIED SCIENCE AND TECHNOLOGY, Brazil; SANTA CASA DE MISERICORDIA DE CAMPOS HOSPITAL (SCMCH), Brazil; UNIVERSIDADE ESTADUAL DO NORTE FLUMINENSE (UENF), Brazil<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>Andrographis Paniculata vs Boesenbergia Rotunda vs Control in Asymptomatic COVID-19</strong> - <b>Condition</b>: Covid19<br/><b>Interventions</b>: Drug: Andrographis Paniculata; Drug: Boesenbergia; Other: Standard supportive treatment<br/><b>Sponsors</b>: Mahidol University; Ministry of Health, Thailand<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>Enhancing COVID Rehabilitation With Technology</strong> - <b>Condition</b>: Covid19<br/><b>Interventions</b>: Behavioral: NexJ Connected Wellness; Other: Usual Care<br/><b>Sponsors</b>: University of Ottawa; Canadian Institutes of Health Research (CIHR); Ottawa Hospital Research Institute<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>Treatment of Covid-19 With a Herbal Compound, Xagrotin</strong> - <b>Condition</b>: Covid19<br/><b>Intervention</b>: Combination Product: Xagrotin<br/><b>Sponsors</b>: <br/>
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Biomad AS; Directorate of health of Sulaimani, Iraq -KRG<br/><b>Completed</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>Evaluation of Clinical and Antibody Response to Covid-19 Vaccination Strategy in TBRI, Egypt</strong> - <b>Condition</b>: Covid19<br/><b>Intervention</b>: Biological: Astrazenica vaccine<br/><b>Sponsor</b>: <br/>
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Samia Hassan El-Shishtawy<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 Change in Viral Load After OPN-019 in Adults With COVID-19</strong> - <b>Condition</b>: Covid19<br/><b>Intervention</b>: Drug: OPN-019<br/><b>Sponsor</b>: Optinose US Inc.<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>Evaluation of Safety and Immunogenicity of a Novel Vaccine for Prevention of Covid-19 in Adults Previously Immunized</strong> - <b>Condition</b>: Covid19<br/><b>Intervention</b>: Biological: A vaccine composed of a recombinant S1 antigen<br/><b>Sponsors</b>: Hospital do Coracao; Farmacore Biotecnologia Ltda<br/><b>Withdrawn</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>Evaluation of the Efficacy, Safety and Immunogenicity of Inactivated COVID 19 Vaccine(TURKOVAC) in Healthy Population of 18 and 64 Years of Age (Both Inclusive):a Randomized, Double-blind, Phase IIb Clinical Trial</strong> - <b>Condition</b>: Covid19<br/><b>Intervention</b>: Biological: Triple dose vaccination by inactivated Covid19 vaccine<br/><b>Sponsors</b>: Health Institutes of Turkey; TC Erciyes University; Kocak Farma; Mene Research<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>Cardiopulmonary Rehabilitation in Long COVID-19 Patients With Persistent Breathlessness and Fatigue</strong> - <b>Condition</b>: COVID-19 Respiratory Infection<br/><b>Intervention</b>: <br/>
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Other: Cardiopulmonary exercise training<br/><b>Sponsor</b>: Louis Bherer<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 Trial on Sequential Immunization of Recombinant COVID-19 Vaccine (CHO Cells) and Inactivated COVID-19 Vaccine (Vero Cells) in Population Aged 18 Years and Above</strong> - <b>Conditions</b>: COVID-19 Pneumonia; Coronavirus Infections<br/><b>Interventions</b>: Biological: Recombinant COVID-19 Vaccine (CHO cell); Biological: COVID-19 vaccine (Vero cells)<br/><b>Sponsors</b>: <br/>
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National Vaccine and Serum Institute, China; China National Biotec Group Company Limited; Lanzhou Institute of Biological Products Co., Ltd<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>Comparison of Detection of SARS-CoV2 (COVID-19) Between Nasopharyngeal Swab Specimens and Those Obtained by Salivary Sputum</strong> - <b>Condition</b>: Covid19<br/><b>Intervention</b>: Diagnostic Test: Salivary test for COVID19<br/><b>Sponsor</b>: Centre Hospitalier de Cayenne<br/><b>Active, not 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>Menstrual Blood Stem Cells in Severe Covid-19</strong> - <b>Conditions</b>: Covid19; Cytokine Storm<br/><b>Interventions</b>: Biological: Allogeneic human menstrual blood stem cells secretome; Other: Intravenous saline injection<br/><b>Sponsors</b>: Avicenna Research Institute; Tehran University of Medical Sciences<br/><b>Completed</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>Public Health Emergency: SOLIDARITY TRIAL Philippines</strong> - <b>Condition</b>: Covid19<br/><b>Interventions</b>: Drug: Remdesivir; Drug: Hydroxychloroquine; Drug: Lopinavir / Ritonavir; Drug: Interferon beta-1a; Drug: Acalabrutinib<br/><b>Sponsor</b>: <br/>
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University of the Philippines<br/><b>Active, not recruiting</b></p></li>
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<h1 data-aos="fade-right" id="from-pubmed">From PubMed</h1>
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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>The Novel Drug Discovery to Combat COVID-19 by Repressing Important Virus Proteins Involved in Pathogenesis Using Medicinal Herbal Compounds</strong> - CONCLUSION: In addition to having high affinity, these herb active ingredients have antioxidant, vasoprotective, anticarcinogenic, and antiviral properties. Therefore, they can be used as extremely safe therapeutic compounds in drug design studies to control COVID-19.</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>Remdesivir and Cyclosporine Synergistically Inhibit the Human Coronaviruses OC43 and SARS-CoV-2</strong> - Remdesivir, a prodrug targeting RNA-dependent-RNA-polymerase, and cyclosporine, a calcineurin inhibitor, individually exerted inhibitory activity against human coronavirus OC43 (HCoV-OC43) in HCT-8 and MRC-5 cells at EC(50) values of 96 ± 34 ∼ 85 ± 23 nM and 2,920 ± 364 ∼ 4,419 ± 490 nM, respectively. When combined, these two drugs synergistically inhibited HCoV-OC43 in both HCT-8 and MRC-5 cells assayed by immunofluorescence assay (IFA). Remdesivir and cyclosporine also separately reduced IL-6…</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 potently neutralizing SARS-CoV-2 antibody inhibits variants of concern by utilizing unique binding residues in a highly conserved epitope</strong> - With the emergence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants with increased transmissibility and potential resistance, antibodies and vaccines with broadly inhibitory activity are needed. Here, we developed a panel of neutralizing anti-SARS-CoV-2 monoclonal antibodies (mAbs) that bound the receptor binding domain of the spike protein at distinct epitopes and blocked virus attachment to its host receptor, human angiotensin converting enzyme-2 (hACE2). Although…</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>Real Nano “Light Vaccine” Will Benefit to COVID-19 Pandemic Control</strong> - This highlight presents a recent technique of “Light Vaccine” for COVID-19 pandemic control. Though this technique has the germicidal advantage to SARS-CoV-2, its shortcomings will limit the wide and in-depth application. We make a perspective of real nano light vaccine, which will play an important role in the prevention and control of COVID-19. Briefly, This flow chart described the MWCNT was fabricated with strong acid and base conditional mixture in order to achieve the p-WCNT (chemical…</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>The Mechanisms of the Growth Inhibitory Effects of Paclitaxel on Gefitinib-resistant Non-small Cell Lung Cancer Cells</strong> - CONCLUSION: Paclitaxel may be a promising anticancer drug and offer a new therapeutic strategy for managing gefitinib- resistant NSCLC 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 overview of the anti-SARS-CoV-2 properties of Artemisia annua, its antiviral action, protein-associated mechanisms, and repurposing for COVID-19 treatment</strong> - Artemisia annua and its phytocompounds have a rich history in the research and treatment of malaria, rheumatoid arthritis, systemic lupus erythematosus, and other diseases. Currently, the World Health Organization recommends artemisinin-based combination therapy as the first-line treatment for multi-drug-resistant malaria. Due to the various research articles on the use of antimalarial drugs to treat coronaviruses, a question is raised: would A. annua and its compounds provide anti-severe acute…</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>Polyketone metabolites isolated from Rhodiola tibetica endohytic fungus Alternaria sp. HJT-Y7 and their SARS-CoV-2 virus inhibitory activitives</strong> - Six new polyketone metabolites, compounds (1-6) and seven known polyketone compounds (7-13) were isolated from Rhodiola tibetica endophytic fungus Alternaria sp. The structural elucidation of five new polyketone metabolites were elucidated on the basis of spectroscopic including 2D NMR and HRMS and spectrometric analysis. Inhibition rate evaluation revealed that compounds 1(EC(50) = 0.02 mM), 3(EC(50) = 0.3 mM), 6(EC(50) = 0.07 mM), 8(EC(50) = 0.1 mM) and 9(EC(50) = 0.04 mM) had inhibitory…</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>Development of ACE2 autoantibodies after SARS-CoV-2 infection</strong> - CONCLUSIONS: Many patients with a history of SARS-CoV-2 infection have antibodies specific for ACE2. Patients with ACE2 antibodies have lower activity of soluble ACE2 in plasma. Plasma from these patients also inhibits exogenous ACE2 activity. These findings are consistent with the hypothesis that ACE2 antibodies develop after SARS-CoV-2 infection and decrease ACE2 activity. This could lead to an increase in the abundance of Ang II, which causes a proinflammatory state that triggers symptoms of…</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>Ethacridine inhibits SARS-CoV-2 by inactivating viral particles</strong> - The respiratory disease COVID-19 is caused by the coronavirus SARS-CoV-2. Here we report the discovery of ethacridine as a potent drug against SARS-CoV-2 (EC50 ~ 0.08 μM). Ethacridine was identified via high-throughput screening of an FDA- approved drug library in living cells using a fluorescence assay. Plaque assays, RT-PCR and immunofluorescence imaging at various stages of viral infection demonstrate that the main mode of action of ethacridine is through inactivation of viral particles,…</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>Correction to: HD5 and LL-37 Inhibit SARS-CoV and SARS-CoV-2 Binding to Human ACE2 by Molecular Simulation</strong> - No abstract</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>SGLT2-Inhibition reverts urinary peptide changes associated with severe COVID-19: An in-silico proof-of-principle of proteomics-based drug repurposing</strong> - Severe COVID-19 is reflected by significant changes in urine peptides. Based on this observation, a clinical test predicting COVID-19 severity, CoV50, was developed and registered as in vitro diagnostic in Germany. We have hypothesized that molecular changes displayed by CoV50, likely reflective of endothelial damage, may be reversed by specific drugs. Such an impact by a drug could indicate potential benefits in the context of COVID-19. To test this hypothesis, urinary peptide data from…</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>Engineering of 2D nanomaterials to trap and kill SARS-CoV-2: a new insight from multi-microsecond atomistic simulations</strong> - In late 2019, coronavirus disease 2019 (COVID-19) was caused by severe acute respiratory syndrome coronavirus 2 (SARS- CoV-2). Spike protein is one of the surface proteins of SARS-CoV-2 that is essential for its infectious function. Therefore, it received lots of attention for the preparation of antiviral drugs, vaccines, and diagnostic tools. In the current study, we use computational methods of chemistry and biology to study the interaction between spike protein and its receptor in the body,…</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>COVID-19 in Patients with Atopic Dermatitis Treated with Dupilumab: Three Cases and a Literature Review</strong> - There are limited clinical data on the impact of the SARS-CoV2 infection on patients with dermatological conditions treated with biologics. Dupilumab is a recombinant human IgG(4) human monoclonal antibody that inhibits IL4 and IL13 signaling, and is used for moderate-severe atopic dermatitis treatment. We present three patients with atopic dermatitis (AD) treated with dupilumab who contracted COVID-19. In all patients, the infection had a mild course, and only in one, as documented by SCORAD,…</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>Patchy signals: capturing women’s voices in mobile phone surveys of rural India</strong> - Phone surveys are a rapid and cost-effective way to collect primary data for research, monitoring and evaluation purposes. But for these data to be precise, reliable and unbiased, women’s perspectives must be accurately represented. Throughout 2020, we conducted seven household surveys in rural India to understand households’ experiences of the COVID-19 pandemic and contemporaneous relief programmes. Given social distancing protocols, we conducted these surveys over the phone, using household…</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>Synthesis of novel calcium channel blockers with ACE2 inhibition and dual antihypertensive/anti-inflammatory effects: A possible therapeutic tool for COVID-19</strong> - Hypertension has been recognized as one of the most frequent comorbidities and risk factors for the seriousness and adverse consequences in COVID-19 patients. 3,4-dihydropyrimidin-2(1H) ones have attracted researchers to be synthesized via Beginilli reaction and evaluate their antihypertensive activities as bioisosteres of nifedipine a well-known calcium channel blocker. In this study, we report synthesis of some bioisosteres of pyrimidines as novel CCBs with potential ACE2 inhibitory effect as…</p></li>
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<h1 data-aos="fade-right" id="from-patent-search">From Patent Search</h1>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>A HERB BASED COMPOSITION ANTI VIRAL MEDICINE FOR TREATMENT OF SARS COV 2 AND A METHOD FOR TREATING A PERSON INFECTED BY THE SARS COV 2 VIRUS</strong> - A Herbal composition, viz., PONNU MARUNTHU essentially comprising of ALLUIUM CEPA extract. [concentrated to 30%] 75%, SAPINDUS MUKOROSSI - extract [Optimised] 10%, CITRUS X LIMON - extract in its natural form 05 TRACYSPERMUM AMMI (L) – extract 07%,ROSA HYBRIDA - extract 03%, PONNU MARUNTHU solution 50 ml, or as a capsulated PONNU MARUNTHU can be given to SARS cov2 positive Patients, three times a day that is ½ an hour before food; continued for 3 days to 5 days and further taking it for 2 days if need be there; It will completely cure a person. When the SARS cov2 test shows negative this medicine can be discontinued. This indigenous medicine and method for treating a person inflicted with SARS COV 2 viral infection is quite effective in achieving of much needed remedy for the patients and saving precious lives from the pangs of death and ensuring better health of people. - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=IN334865051">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Anti-Sars-Cov-2 Neutralizing Antibodies</strong> - - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=AU333857732">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Expression Vector for Anti-Sars-Cov-2 Neutralizing Antibodies</strong> - - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=AU333857737">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>DEVELOPMENT OF CNN SCHEME FOR COVID-19 DISEASE DETECTION USING CHEST RADIOGRAPH</strong> - - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=AU333857177">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>SARS-COV-2 BINDING PROTEINS</strong> - - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=AU333402004">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>A PROCESS FOR PREPARING MONTELUKAST SODIUM FOR TREATING COVID 19 PATIENTS</strong> - - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=AU333857132">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>IDENTIFICATION OF ANTI-COVID 19 AGENT SOMNIFERINE AS INHIBITOR OF MPRO & ACE2-RBD INTERACTION</strong> - - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=AU333857079">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>一种脂质化合物及包含其的脂质载体、核酸脂质纳米粒组合物和药物制剂</strong> - 本发明属于基因治疗技术领域，具体涉及一系列脂质化合物及包含其的脂质载体、核酸脂质纳米粒组合物和药物制剂。本发明提供的具有式（I）结构的化合物，可与其它脂质化合物共同制备脂质载体，展现出pH响应性，对核酸药物的包封效率高，大大提升了核酸药物在体内的递送效率；而且，可根据核酸药物需要富集的器官而选用特定结构的脂质化合物作为脂质载体，具有良好的市场应用前景。 - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=CN334878390">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>一种联合检测IgG、IgM和中和抗体的试纸条及其制备方法、试剂盒</strong> - 本申请涉及生物医学检测技术领域，具体涉及一种联合检测IgG、IgM和中和抗体的试纸条及其制备方法、试剂盒。所述试纸条包括第一检测部和第二检测部，均包括有底板以及设置在底板上并依次连接的样品垫、结合垫、检测垫和吸水垫；所述第一检测部的结合垫上包被有胶体金标记的N抗原和S抗原，所述第一检测部的检测垫上设有第一检测线和第二检测线；所述第二检测部的样品垫上包被有ACE2，所述第二检测部的结合垫上包被有胶体金标记的S‑RBD抗原，所述第二检测部的检测垫上设置有第三检测线。本申请能实现现场高准确度快检，检测人员只需要使用一个试纸条就可以准确测定机体中IgG、IgM和中和抗体。 - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=CN334878374">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Deep Learning Based System For Detection of Covid-19 Disease of Patient At Infection Risk.</strong> - - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=AU333857030">link</a></p></li>
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</ul>
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