View clinical trials related to Covid19.
Filter by:This is a phase 1 study in healthy volunteers who have received at least three doses of an mRNA COVID-19 vaccine, to evaluate the safety and immune responses that develop in the blood and lungs following the administration by aerosol of either Ad5-triCoV/Mac or ChAd-triCoV/Mac, new experimental adenovirus-based vaccines expressing SARS-CoV-2 spike, nucleocapsid and RNA polymerase proteins.
This study tests the effectiveness of a community-based peer advocacy, mutual learning, and social support intervention (Refugee and Immigrant Well-being Project) to reduce several negative consequences of the COVID-19 pandemic that are disproportionately impacting Latinx and Black populations: psychological distress, financial problems, and daily stressors. In partnership with five community-based organizations that focus on mental health, legal, education, and youth issues with Latinx immigrants and African refugees, we will also be able to examine the effects of people's involvement with community-based organizations and local and state policy changes on their mental health, economic stability, stressors, and social support. This is important not only for Latinx and Black populations and the large number of immigrants and refugees in the United States and worldwide, but also because the intervention model and what we learn from this study have the potential to alleviate mental health disparities experienced by other marginalized populations who face unequal access to social and material resources, disproportionate exposure to trauma and stress, and worse consequences of the COVID-19 pandemic.
The level of neutralizing antibody was detected by using the constructed pseudovirus covid-19 variant at baseline , 1 month , 6 months and 12 months after primary vaccination, within 15 days after booster immunization at 12 months . and the ability of IgG subclasses to neutralize and cross immunization of variant strains was analyzed.
The coronavirus disease of 2019 (COVID-19) has affected over 2.4 million individuals worldwide and has resulted in >171,000 deaths. Cardiovascular disease (CVD) is an important contributor to death in these patients. Those who develop cardiac injury during infection have a 4-fold increased risk of death. Furthermore, pre-existing CVD or cardiovascular risk factors (e.g. diabetes, hypertension) are associated with worse outcomes. Given the recent emergence of this disease, there is limited understanding of: (i) the risk factors for cardiovascular events, (ii) blood biomarkers for early recognition, and drug targeting, of patients at risk of adverse outcomes, and (iii) the short term subclinical and clinical cardiovascular manifestations in those who survive to discharge.
This is a randomized, double-blinded, phase ⅠV clinical trial of SARS-CoV-2 inactivated vaccine manufactured by manufactured by Sinovac Research & Development Co., Ltd. The purpose of this study is to evaluate the safety and immunogenicity of booster vaccination with high-dosage SARS-CoV-2 vaccine in populations who have received two-dose Coronavac with 2nd dose vaccinated more than 6 month.
Subjects will be recruited and divided into 3 groups: Experimental Group (468 subjects): 1st dose : combined vaccination of COVAX+PPV23, 2nd dose: combined vaccination of COVAX+IIV4; Control Group A (468 subjects): 1st dose: COVAX only, 2nd dose: COVAX only; Control Group B (468 subjects): 1st dose: PPV23 only, 2nd dose: IIV4 only. Blood samples will be collected 3 times: before the 1st dose of vaccinatioin; before the 2nd dose of vaccination; 28 days after the 2nd dose of vaccination. The immunogenicity and safety of both experimental and control groups will be analyzed.
This master protocol serves as a common reference for the inpatient and outpatient clinical studies that share common elements.
An open label phase 2 trial to evaluate safety, tolerability and immunogenicity of the ABNCoV2 vaccine after IM application. The trial will evaluate a homologous prime-boost regimen with 100 µg ABNCoV2 in initially seronegative adult subjects (Group 1), as determined by a qualitative test for SARS-CoV-2 antibodies, compared to a single boost vaccination with 100 µg (Group 2) or 50 µg (Group 3) ABNCoV2 in initially seropositive subjects, as defined by a positive qualitative test for SARS-CoV-2 antibodies and a history of SARS-CoV-2 vaccination or previous COVID-19 disease at least 90 days prior to planned trial vaccination.
As the investigators need data on long term outcome of Covid-19, especially respiratory sequelae, a national cohort is required. To better evaluate the potential respiratory sequelae after SARS-CoV-2 infection, it is fundamental to include patients with different management at the acute phase of the Covid-19: ambulatory management, hospitalization in non ICU and in ICU units. That is why the investigators will conduct a national cohort study with all components of french pneumology which will give the investigators the opportunity to include patients in general hospital, in university hospital and in private structure. As it is a "real life" study, the investigators will include all patients who will have a consultation with a pneumologist for an evaluation 5 to 7 months after a Covid-19 infection whatever their acute disease management. The investigators will collect all available data on Covid-19 acute phase, on patients characteristics and comorbidities, on persistent symptoms after Covid-19, on exams results during the outcome evaluation (CT-scan, 6 min walk test, spirometry and DLCO, blood gas, VO2 max if realized).
The proposed research focuses on evaluating the mobile application, Easing Anxiety Sensitivity for Everyone (EASE), to improve overall public health that concerns risks and mental health status during the COVID-19 pandemic and to minimize the existing health disparities among Black, Latinx, and American Indian (BLAI) individuals during this time. EASE provides COVID-19 symptom monitoring, exposure management skills, and psychoeducation on stress and it's impact on infection and disease susceptibility. This study aims to compare the effect of EASE to an empirical measurement of standard-of-care digital intervention and to identify the effective mechanisms in EASE.