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Showing 1-20 of 1,912 trials
NCT05445479
A new coronavirus, the third documented animal-to-human passage, emerged in Wuhan , China in the last quarter of 2019. Acne patients on doxycycline escaped seasonal viruses, showing the interest of this antibiotic as a possible treatment against COVID-19. The antiviral action of tetracyclines can be explained by different mechanisms. First of all, tetracyclines are modulators of innate immunity by decreasing NF-B expression, inhibiting inflammatory cytokines such as TNF-α, IL-1β and IL-6, inflammatory granulomas and free radical release . This action is obtained at doses lower than those necessary to obtain an antibiotic effect. Another possible action of tetracyclines is their ability to chelate zinc from matrix metalloproteinases (MMPS). The coronavirus family is known to bind to host MMPs, particularly for viral survival. Their chelating activity may help inhibit SARS-CoV-2 infection by limiting its ability to replicate in the host. Finally, tetracyclines could have a direct action by inhibiting the replication of single-stranded RNA virus, such as the SARS-CoV-2 coronavirus.We therefore propose a larger comparative study using data from the French National Health Data System.
NCT04359511
To date, there is no efficient therapeutics to prevent or treat COVID-19 related pulmonary failure. Corticosteroids (CS) could be a helpful therapeutic. Retrospective reports suggested survival improvement in patients with acute respiratory distress syndrome (ARDS). CT scan for COVID19 hospitalized patients showed sometimes unusual aspects of pneumonia, suggestive of an organizing phase of diffuse alveolar damage (DAD). We hypothesize that, in the context of alveolar aggression induced by COVID-19, CT scan could help to individualize patients with a high probability of pulmonary organizing process who could benefit from CS treatment.
NCT05935800
Frailty is associated with higher rates of morbidity, mortality, and failure to rescue after major surgical procedures. Sarcopenia is degenerative loss of skeletal muscle mass and strength. It is a key component of physical frailty and is associated with poorer post-surgical outcomes due to decreased patient strength and vitality.
NCT06305793
This study is a platform protocol designed to be flexible so that it is suitable for a wide range of settings within health care systems and in community settings where it can be integrated into COVID-19 programs and subsequent treatment plans. This protocol is a prospective, multi-center, multi-arm, randomized, controlled platform trial evaluating various interventions for use in the treatment of autonomic dysfunction symptoms, including cardiovascular complications and postural orthostatic tachycardia syndrome (POTS), in Post-Acute Sequelae of SARS-CoV-2 infection (PASC) participants. The interventions tested will include non-pharmacologic care and pharmacologic therapies with study drugs.
NCT01306084
Background: \- Viral infections are an important cause of illness and death in hospitalized patients as well as outpatients. New strains of viruses may appear and infect both healthy people and those with weak immune systems. A better understanding of these new virus strains (such as SARS-CoV-2, the virus that causes COVID-19) may help to control and prevent these infections. In particular, some viral infections that are less problematic in healthy persons can be life threatening in persons with weak immune systems, and viruses may be able to evolve more rapidly in persons with weak immune systems and therefore develop resistance to existing treatments. Researchers are interested in collecting samples and information from otherwise healthy persons or persons with weak immune systems to study the effects of viruses and their development. Objectives: \- To collect samples and data from individuals who have been exposed to or have contracted viral infections. Eligibility: * Individuals of all ages who have been diagnosed with a viral infection are suspected to have a viral infection, or have been in close contact with someone with a suspected or actual viral infection that is of interest to investigators in the Laboratory of Infectious Diseases. * Healthy persons and persons with weak immune systems (immunocompromised individuals) are eligible to participate. Design: * Participants will be pre-screened to determine if they meet the eligibility criteria for the trial. * If eligible, evaluation may include a medical chart review, a history and physical examination, review of clinical reports from outside hospitals and laboratories, and review of tissue biopsies. * Study procedures may include collection of blood, urine, saliva, nasal fluid sampling, throat swabs, stool, and genital swabs. For participants who have specimens collected as part of their medical care (e.g. wound swabs, spinal tap, bronchoscopy, liver biopsy etc.), researchers may use leftover specimens from the clinical laboratory for testing. * Specimens may be collected up to 4 times per week during the first 2 weeks after enrollment, and then as many as 2 times per week for up to 2 years. Some participants may be asked to continue providing specimens if there is concern for relapse or recurrence of the infection. * Treatment is not offered under this study.
NCT04551378
The study investigates how the COVID-19 pandemic has impacted the psychological, financial, physical, and social well-being of adolescent and young adult (AYA) cancer patients and survivors. AYA cancer survivors have inferior long-term survival compared to the general population, and the negative impact of the global COVID-19 pandemic may be even higher in this vulnerable group. The information gained from this study may provide an opportunity to determine the self-reported COVID-19 specific psychological distress in AYA cancer survivors, and may lead to the development of a targeted intervention to improve physical and psychosocial health for AYA cancer patients and survivors.
NCT05218083
Multicenter, prospective, randomized controlled trial providing mobile health supported physical rehabilitation to 120 patients who have been critically ill with COVID-19 and who complete at least one exercise session.
NCT05799521
The goal of this study is to test an investigational new inhaled medication called Optate.
NCT05672355
This phase II trial compares the effect of the GEO-CM04S1 vaccine with the current standard of care vaccine in preventing COVID-19 infections in patients with chronic lymphocytic leukemia (CLL). The GEO-CM04S1 vaccine uses a modified vaccinia virus (MVA) backbone that may be more effective at boosting COVID-19 immunity in patients with poor immune responses. MVA strongly induces T cell expansion (infection fighting blood cells) even in the background of a suppressed immune system, which is the case in the targeted CLL patient population. Using the GEO-CM04S1 vaccine may be more effective at preventing COVID-19 infection in patients diagnosed with CLL.
NCT05057169
Randomized comparison of 3rd dose with inactivated vaccine (CoronaVac) or mRNA vaccine (Comirnaty) in adults who previously received two doses of CoronaVac (Sinovac) or two doses of BNT162b2 (Comirnaty, BioNTech/Fosun Pharma) at least 6 months earlier.
NCT05467930
The purpose of this study is to describe the long-term health effects of COVID-19 in a population of mostly Black and Latinx individuals and their households who were diagnosed with COVID-19 at Columbia University Irving Medical Center. In New York, the upper Manhattan and south Bronx communities neighboring Columbia University Irving Medical Center (CUIMC) have been two of the most impacted communities of the COVID-19 pandemic. These neighborhoods are predominantly non-Hispanic black or African American and Latinx. This study will invite people who tested positive for COVID-19 and/or were treated at Columbia University Irving Medical Center to: 1) take a survey to ask about current symptoms and any health problems and 2) ask permission to review COVID-related health history including COVID-19 testing results (from the medical record) since infection to learn about health effects after COVID-19 infection; 3) invite anyone in their household to take a survey; and 4) for up to 500 patients who were hospitalized for COVID, give the option of doing a nasal swab to test for SARS-CoV-2 virus and blood test to check for antibody up to 12 months after diagnosis, to compare how results are different 12 months after infection. The goal is to learn about how the severity of person's infection in 2020 influences long term health effects and how others in their household are impacted by COVID-19.
NCT05548439
VBI-2901a is an investigational vaccine candidate that uses enveloped virus-like particles (eVLPs) to express the spike proteins of three coronaviruses: SARS-CoV-2 (the virus that causes COVID-19 disease), SARS-CoV-1 and MERS-CoV. The trivalent vaccine candidate is designed to induce neutralizing antibody and cell-mediated immune responses against the spike protein of the original strain of SARS-CoV-2, SARS-CoV-2 variants (such as Beta, Delta and Omicron) and other related coronaviruses that could emerge in the future. The Phase 1 study will be an open-label comparison of two intramuscular doses of VBI-2901a at 5 µg or 10 µg per dose or one dose of VBI-2901a at 10 µg per dose in adults 18 to 64 years of age who had previously received two or more vaccinations with licensed COVID-19 vaccines. The purpose of the study is to test the safety of VBI-2901a and to know more about its ability to boost immune response against SARS-CoV-2 (the virus that causes COVID-19 disease) and two other related coronaviruses SARS-CoV-1 and MERS-CoV.
NCT04516811
A prospective, randomized, placebo-controlled, double-blinded, phase III clinical trial of the therapeutic use of convalescent plasma in the treatment of patients with moderate to severe COVID-19
NCT05078905
Background: Vaccines against SARS-CoV-2, the virus that causes COVID-19, have been highly effective against preventing severe disease. But the protective effects of these vaccines appear to wane over time. Researchers want to learn why. Objective: To learn more about how the immune system responds to vaccines against infections like SARS-CoV-2. Eligibility: Healthy adults ages 18 or older who are scheduled to receive either a new vaccine or a booster shot against SARS-COV-2 or another emerging infection. Design: Participants will be screened with a medical history and blood and urine tests. Participants will have up to 8 study visits in 1 year. Each visit should last less than 2 hours. At each visit, participants will give blood samples. Some blood samples will be used for genetic testing. They will also give updates on their health. After the first study visit, participants will receive either a first vaccination or a booster shot. They must get the vaccine in their community or workplace. They will not get the vaccine at NIH. This study currently focuses on SARS-CoV-2, but it will expand to other infectious diseases as they emerge and become the target of new vaccines. ...
NCT04402879
The purpose of this trial is to determine whether Prone Positioning (PP) improves outcomes for non-intubated hospitalized patients with hypoxemic respiratory failure due to COVID-19, who are not candidates for mechanical ventilation in the ICU. The investigators hypothesize that PP will reduce in-hospital mortality or discharge to hospice, compared with usual care for non-intubated patients with do-not-intubate goals of care with hypoxemic respiratory failure due to probable COVID-19.
NCT06404073
This is a platform protocol designed to be flexible so that it is suitable for a range of interventions and settings within diverse health care systems and community settings with incorporation into clinical COVID-19 management programs and treatment plans if results achieve key study outcomes. This protocol is a prospective, multi-center, multi-arm, randomized, controlled platform trial evaluating interventions to address and improve exercise intolerance and post-exertional malaise (PEM) as manifestations of Post-Acute Sequelae of SARS-CoV-2 Infection (PASC). The focus of this protocol is to assess interventions that can improve exercise capacity, daily activities tolerance, and quality of life in patients with PASC.
NCT05204550
Coronavirus-induced disease 2019 (COVID-19) is an infection caused by a virus whose full name is severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). This is a new and rapidly-spreading infectious disease which carries a significant risk of death, has brought massive economic impact globally and has proved hard to contain through public health measures. While we currently have effective vaccines, they do not protect the whole community and the constant threat of new mutations means there is an urgent need to identify new approaches to reducing community spread of infection. Heparin is a naturally occurring sugar molecule which has been used for a century to treat a range of medical problems including heart attacks, strokes, and blood clots. It has also been investigated as a treatment for pneumonias. Recent research suggests it binds to the SARS-CoV-2 virus in such a way it may reduce the virus' ability to enter cells. This may be an important way to tackle the early stages of infection which occurs inside the nose. Therefore, this medication could be used amongst people with early COVID-19 infection and amongst their household contacts to reduce the rate of virus transmission during local outbreaks. If proven effective there are many other potential uses as primary prophylaxis for people working in high risk areas, for travel, for protection in high risk crowded environments such as nightclubs, or sporting events. Heparin is safe, inexpensive, available worldwide and if effective could be rapidly used across the world to slow progression of the current pandemic. Further there are recent studies suggesting that the risk of brain complications as part of "long COVID", are directly related to the amount of virus in the nose. Reducing the viral load in the nose is thought to be effective in reducing these "long COVID" complications. This study will explore the effect of the intervention on viral load and long COVID. In this study, researchers want to investigate this medicine in people who have been identified by a COVID-19 swab test to be in the early stages of infection(defined as the index case), and amongst their household contacts. Each participant would take the medicine or a dummy control solution by spray into their nose three times a day for 10 days. The study will investigate if there are fewer people who contract SARS-CoV-2 infection by day 10 amongst households who receive the medicine than households which receive the dummy control.
NCT05815498
The purpose of this study (Part 1 and Part 2) is to evaluate the relative vaccine efficacy (rVE), safety, reactogenicity, and immunogenicity of mRNA-1283.222 versus mRNA-1273.222 (Part 1) and mRNA-1283.815 versus mRNA-1273.815 (Part 2).
NCT07552779
Healthy adults will be enrolled into this open-label, Phase 1 research study. Participants will spend about 9 nights and 10 days in the clinical research unit (CRU) and the total time in the study will be about 11 weeks. The goal of this clinical trial is to compare how much of the study drug ibuzatrelvir is in participants' blood after taking one of the two different types of tablets containing the same amount of ibuzatrelvir without food. The study will also measure how much ibuzatrelvir is in participants' blood after taking one type of the tablets dispersed in water and when one type of the tablets is taken with food. This study drug is taken by mouth.
NCT04967807
The study will focus on cardiac blood and imaging biomarkers to facilitate early recognition of patients at risk for myocardial injury after COVID-19 vaccination. Ultimately, the intention is to identify patients at risk, reduce adverse events, and determine the need for longer-term follow-up in patients with myocardial injury after vaccination.