Active clinical trials for "COVID-19"

The present study is part of ORCHESTRA project, a three-year international research project aimed at tackling the coronavirus pandemic. ORCHESTRA provides an innovative approach to learn from the pandemic SARS-CoV-2 crisis, derive recommendations to further management of COVID-19 and be prepared for the possible future pandemic waves. The ORCHESTRA project aims to deliver sound scientific evidence for the prevention and treatment of the infections caused by SARS-CoV-2 assessing epidemiological, clinical, microbiological, and genotypic aspects of population, environment and socio-economic features. The project builds upon existing, and new largescale population cohorts in Europe (France, Germany, Spain, Italy, Belgium, Romania, Netherlands, Luxemburg, and Slovakia) and non-European countries (India, Perú, Ecuador, Colombia, Venezuela, Argentina, Brazil and Gabon) including SARS-CoV-2 infected and non-infected individuals of all ages and conditions. The primary aim of ORCHESTRA is the creation of a new pan European cohort applying homogenous protocols for data collection, data sharing, sampling, and follow-up, which can rapidly advance the knowledge on the control and management of the COVID-19. ORCHESTRA will include SARS-CoV-2-negative individuals and thereby enable a prospective follow-up and an analysis of vaccination response. The cohort will involve four different populations: general population, COVID-19 patients, fragile individuals (children, elderly, transplanted, oncological, HIV infected, and those with Parkinson disease), and health-care workers. Each of these "perpetual" cohorts can answer different research questions and vaccine strategies. Within the ORCHESTRA project, the Work Package 4 (WP4) will focus on the cohort of fragile patients including pregnant women/new-born, children, patients with HIV infection, patients with autoimmune disease, solid organ transplant recipients, patients with oncological and hematological diseases, patients with cystic fibrosis, patients with Parkinson Disease and rheumatological diseases from from 14 countries (5 European and 9 non-European countries), with approximately 20000 subjects.

The Omicron variant of concern (VOC) is currently rapidly spreading worldwide, with extremely high transmission rates, with an estimated R of >3. The investigators now have preliminary, yet unpublished data, showing slow waning of the immune response after the third dose of the BNT162b2 mRNA vaccine within 4 months after this dose . While these data would not have been worrisome in the Delta VOC era, this may be different with the emergence of the Omicron VOC. These data raise the question of when and will a 4th dose be needed to cope with the emergence of Omicron. However, if a maximal effect of the current vaccine has been reached against Omicron, with a third dose, will a 4th dose have any added value? Here, the investogators will study the potential immunogenicity of a 4th dose, together with assessing safety and effectiveness in preventing infections

This study is open-label, two arms, multi-centered, phase 2b clinical trial to determine the efficacy, safety, and immunogenicity of booster vaccination (TURKOVAC) against Covid-19. The primary aim of the study is to evaluate the efficacy of a booster dose of TURKOVAC vaccine administered to subjects who have passed at least 90 days and at most 240 days after the second dose of the first course of Comirnaty (Code name: BNT162b2) vaccine.

Retrospective data collection to evaluate the gas transfer capacity of the Braile Biomédica® OxyPrime® ECMO BRCoating® Membrane Oxygenator in COVID-19 patients during the pandemic.

2.1 Study the role of NLRP3 inflammasome in COVID-19 patients. 2.2 Study the gene expression of NLRP3 and IL-1β in blood samples of COVID-19 patients and compare to apparently healthy subjects. 2.3 Correlation between NLRP3, IL-1β, IL-6 and severity of the disease. 2.4 Impact of ferritin and D-dimer on inflammasome componnets NLRP3, IL-1β IL-6 .

The goal of this observational study is to study the safety of initiation of antitumor therapy early after nucleic acid test turn negativity in tumor patients infected with COVID-19. The main questions aims to answer are: Whether initiation of antitumor therapy early after nucleic acid test turn negativity in tumor patients infected with COVID-19 increases adverse events related to antitumor therapy. Whether initiation of antitumor therapy early after nucleic acid test turn negativity in tumor patients infected with COVID-19 increases risk of re-infection of COVID-19. How initiation of antitumor therapy early after nucleic acid test turn negativity in tumor patients infected with COVID-19 affects QoL of tumor patients Participants will be asked to answer the question about: the severity and duration of COVID-19 symptoms the date of diagnosis of COVID-19 the date of negative nucleic acid test the QoL of life before infection with COVID-19, during infection of COVID-19, after nucleic acid test negativity and receiving antitumor therapy

It is a Single Arm, Open Label Clinical Study to Evaluate the Immunogenicity and Safety of Sequential Immunization of V-01-351/V-01D Bivalence Vaccine in Healthy Adults Aged 18 Years and Older After the Vaccination of 2 Doses of Inactivated Vaccines. A total of 20 participants were enrolled.

This is a multicenter, international, randomized, active-controlled platform study with each sub-study designed to randomize subjects to receive a single injection with UB-612 or a comparator COVID-19 vaccine in 1:1 ratio.

This study evaluates immunologic response following COVID-19 vaccination in children, adolescents, and young adults with cancer. Vaccines work by stimulating the body's immune cells to respond against a specific disease. The immune response produces protection from that disease. Effects from cancer and from treatments for cancer can reduce the body's natural disease fighting ability (called immunity). Factors such as vaccine type, timing of vaccine dosing related to treatment for cancer and number of vaccine doses or "boosts" (extra vaccine shots) may strengthen or diminish the body's protective immune response. This study may help researchers learn more about how the body's immune system responds to the COVID-19 vaccine when the vaccination is given during or after cancer treatment.

With more than 246 million people diagnosed with coronavirus 2019 (COVID-19) around the world, many of whom have required medical attention for past 23 months, greater emphasis is being placed on post-acute care of COVID-19 survivors. According to recent data, millions of patients who have recovered from acute COVID-19 are experiencing persistent symptoms, which lead to disability and impaired activities of daily living. Various terms have been used to describe the condition of patients who do not return to their initial health status to include post-acute sequelae of COVID-19, such as post-acute COVID syndrome (PACS) and Long COVID. The growing global burden of COVID-19 suggests that the potential effects of Long COVID in public health are vast even if Long COVID is experienced by a small proportion of patients recovering from acute infection. The ability to identify patients at high risk for Long COVID and forecasting medical resource requirements is of important clinical utility in the present. In view of the large number of people surviving after infection with COVID-19 and that should require follow-up, determine which patients are at risk of have Long COVID and who require close monitoring is crucial. In this study, therefore, we set out to analyze what type of patient profile with COVID-19 who, after 12 weeks of having suffered the infection, experiences the signs and symptoms described by current literature.