Loading clinical trials...
Browse 1,603 clinical trials for covid-19. Find studies that match your criteria and connect with research centers.
Find trials near:
Showing 501-520 of 1,603 trials
NCT05222750
Background/Rationale: A rare syndrome of thrombosis associated with low platelets has been reported in a few cases of recent exposure to COVID-19 vaccine. Medicines \& Healthcare products Regulatory Agency (MHRA) had requested for all cases of thrombosis or thrombocytopenia occurring within 28 days of coronavirus vaccine to be reported via the online yellow card system. This syndrome seems to be affecting patients of all ages and both genders; at present there is no clear signal of risk factors. Up to and including 14 April 2021, the MHRA had received 168 United Kingdom (UK) reports of thrombo-embolic events with concurrent low levels of platelets following the use of the COVID-19 Vaccine AstraZeneca. The United Kingdom (UK) is uniquely placed to study this area because of its registration-based primary care system, and a unique identifier number links primary care to secondary care data. Additionally, vaccination is well advanced, maximising population wide vaccine exposure. Objectives and Hypotheses: Estimate event rates and describe characteristics of patients with a record for thrombotic thrombocytopenia syndrome, thromboembolism or thrombocytopenia, in the general population of England. Methods: Study design: Secondary data analysis using a cohort design. Data Source(s): This is a retrospective cohort study using linked secondary databases in England accessed through the NHS Digital Trusted Research Environment (TRE). The primary care data will be linked with vaccination, primary care data, hospitalization, COVID-19 test results, mortality data at the national level for capture of key study variables. This integrated digital health system will also include other linkages such as the Oxford-Royal College of General Practitioners sentinel network; ORCHID. Study Population: All patients, with our population of interest in England who are present in the integrated health records of NHS Digital TRE and/or the Oxford Royal College of General Practitioners Clinical Informatics Digital Hub (ORCHID) database at the start of each study period. Variables: Demographic, socioeconomic, clinical descriptors and risk factors for thrombosis and/or thrombocytopenia; COVID-19 vaccines. Statistical Analysis: The event rates with 95% CIs will be calculated by dividing the number of events with person-time at risk per 100,000 person-years. Further, event count and event rates will be evaluated in a relationship with COVID-19 vaccination date.
NCT05616663
Started on January 9, 2020 with the announcement of the discovery of a new SARS-CoV-2 coronavirus, the Covid-19 pandemic is responsible as of June 21, 2020 for 160,377 confirmed cases in France, 29,640 deaths and 9,823 hospitalizations. The Grand Est region is one of the regions in France that was most precociously and strongly affected by the epidemic, in particular the Strasbourg University Hospital. Faced with the heavy use of the healthcare system, hospital staff of all categories are an essential resource to be preserved. Several studies have shown the significant impact of Covid-19 on doctors and caregivers. In order to better protect these personnel and avoid contamination that could be harmful to their health but also because of the consequences in terms of staff, it is necessary to better understand the risk factors for transmission of this infection, the means of protection, the evolution of the disease and the determinants of the return to work. Few studies have explored on such a large workforce and in detail the professional risk factors for developing Covid-19 within different groups of hospital professionals including also non-caregivers and the evolution when returning to work in an outpatient population.
NCT05754411
This trial adopts a single-center, single-dose, single-period, non-randomized, open-label study design. It is planned to enroll 6\~8 healthy male subjects, and each subject receives single oral administration of drug solution containing 600mg/approximately 100µCi \[14C\]STI-1558 under fasting conditions on trial D1. The whole blood, plasma, urine and stool samples are collected at specified time points/intervals during the trial. The pharmacokinetic parameters of the total radioactivity in plasma and whole blood, the material concentration ratios of the total radioactivity in plasma and whole blood, and the material balances are obtained by testing the total radioactivity of \[14C\]STI-1558 in plasma, whole blood, urine and feces. Meanwhile, using isotope tracer and mass spectrometry techniques, the main pathways and characteristics of metabolism and elimination of STI-1558 in humans are obtained through the quantification of radioactive metabolite profiles and the structure identification of the main metabolites in plasma, urine and feces of the subjects. The entire duration of trial is expected to be 5 months.
NCT04930003
Randomized, Blind, Placebo-controlled Phase- I Study and Randomized, Open Phase Phase-II Study of QazCoVac-P - COVID-19 Subunit Vaccine in Healthy Adult Volunteers From 18 Years Old and Elder
NCT04359901
Objectives: To determine whether blockade of IL-6R is beneficial in patients with COVID-19 infection of moderate severity. Research Design: Randomized, controlled trial. Two-arm trial comparing standard care alone to standard care with addition of sarilumab (anti-IL6R). The trial will use a randomized play-the-winner design, in which randomization becomes weighted toward the arm that was more effective in previous subjects in the trial. Methodology Hospitalized patients meeting clinical criteria for moderate disease and testing positive for coronavirus infection. Interventions: sarilumab, 400 mg subcutaneous injection. Standard care is not pre-specified, may vary among patients, and may include agents with anti-viral activity, such as remdesivir or hydroxychloroquine, among others. Up to 120 patients, primary outcome intubation or death within 14 days. All data will be extracted remotely from the electronic health record (EHR). Clinical Implications: The study has potential to establish IL-6R blockade, delivered subcutaneously, as standard of care in reducing progression to critical illness in patients with moderate COVID-19 disease.
NCT05648097
In this study, a patient space occupied by a patient with confirmed COVID-19 in an open-space multiple bed area in the Intermediate Care Unit will be equipped with a mobile, optimally placed high efficiency particulate air ("HEPA")-equivalent air filtration unit ("Baldachin") in addition to existing hospital policy infection prevention and control measures. The investigators are going to evaluate this intervention regarding its capacity to prevent the nosocomial onwards transmission of Sars-COV2 to patients located in the same multiple-bed open space patient area.
NCT05196581
SARS-CoV-2 (Severe Acute Respiratory Syndrome Coronavirus 2), the new coronavirus, causes a disease called COVID-19 that can trigger aggressive inflammatory responses. In this sense, in vitro intervention with high concentrations of sodium chloride has shown some favorable results in the inactivation of the disease Objective: to determine the effectiveness of inhaled sodium chloride therapy (BREATHOX®) in preventing the use of health resources in patients ≥ 18 years of age in 28 days compared to usual care. Method: Pilot, open randomized clinical trial study, including 100 patients with COVID-19 confirmed and symptomatic with up to 10 days of symptom onset. The included participants will be randomized according to a ratio of 1:1:1 into three groups: (Group 1) Standard of care + BREATHOX® one session (two oral inhalations and more nasal instillation in each nostril) every hour with a total of 10 sessions per day for 10 days; (Group 2) standard of care + BREATHOX® one session (two oral inhalations and more nasal instillation in each nostril) every three hours for a total of 5 sessions per day for 10 days; (Group 3) standard of care. After collecting the signed informed consent form, research participants will be evaluated on the tenth day of device use and re-evaluated on D28 for safety assessment. Recovery time for symptoms related to COVID-19 infection will be measured.
NCT04463823
NORPLASMA COVID-19 includes both the production of convalescent plasma from approved blood donors who have recovered from covid-19 (coronavirus disease 2019), and clinical studies to evaluate efficacy and safety of the treatment, as recommended by European health authorities. Patients who receive convalescent plasma in a clinical setting will be invited to participate in the monitoring study NORPLASMA MONITOR, where clinical data about safety and effect on clinical parameters including virus load and recovery time will be collected and compared to european patients in a common database for the European countries. The treated patients can be compared to a historical control group.
NCT04410107
Coronavirus disease 2019 (COVID-19) is a respiratory tract infection caused by a newly emergent coronavirus (SARS-CoV-2) that can progress to severe disease requiring hospitalization and oxygen support in around14% of the cases and 5% require admission in intensive care unit. The medium and long-term impact in survivors of severe COVID-19 on lung function, exercise capacity and health-related quality of life remains to be determined.
NCT04726150
COVID-19 can cause myocarditis, which can cause myocardial fibrosis. This has been shown to increase mortality and morbidity among athletes. Several efforts have been made to guide sports participation after COVID-19, but not much scientific evidence is present to back-up those guidelines. The current initiative aims gain a heightened insight in this matter.To identify the presence of fibrosis athletes who recovered from COVID-19 will undergo CMR (Cardiac MRI). All athletes will also undergo echocardiography, 5-day Holtermonitoring among others. This will allow to determine whether differences between those with and those without fibrosis are present. If fibrosis is present, athletes will be offered an implantation of a very small monitoring device that will be able to detect arrhythmias with a much higher sensitivity. Also an exercise echocardiography will be performed, to determine the safety of continuation of athletic efforts. Amendment: Recently myocarditis and pericarditis have also been observed after the administration of mRNA-vaccines, specifically after the second dose. The effect of vaccination on exercise capacity is less clear. To investigate this we propose to amend the inclusion criteria for COVIDEX with "athletes undergoing or having undergone COVID vaccination"
NCT04979949
A booster dose of vaccine (Turkovac or CoronaVac) will be administered to subjects who have passed at least 90 days and at most 270 days after the second dose of the first course of CoronaVac vaccine.
NCT05210179
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.
NCT05481177
The purpose of the study is three-fold. The primary aim is to identify the proportion of Long-Haul COVID (LHC) and non-LHC volunteers with relevant symptoms actually have postural orthostatic tachycardia syndrome (POTS). The second is to determine benefit of ivabradine treatment. Ivabradine is a drug approved to treat tachycardia in persons with heart failure. The third is to characterize risk factors and outcomes among volunteers with and without LHC. This will include comparison with COVID-19-positive individuals who did not develop long-COVID symptoms. The study will improve basic and applied knowledge of LHC and its associated cardiovascular and autonomic consequences. Cellular and molecular characterization of LHC and non-LHC participants will be performed with a nested clinical trial for Ivabradine responsiveness on reduction of tachycardia. It is hoped that a greater understanding of LHC, and related autonomic dysfunction in particular will help to identify treatment paradigms and therapeutic targets for improving recovery and enhancing health for those affected.
NCT05082714
The aim of this study is to investigate whether baricitinib is non-inferior to tocilizumab in severe COVID-19.
NCT04764721
Patients with Covid-19 (Coronavirus disease 19) may experience multiple neurological symptoms . 18F-FDG PET-CT ( Positons EmissionTomography coupled with a Computer Tomography with flurodesoxyglucose labelled with fluor 18), which reflects neuronal glycolytic metabolism, shows early variations in neuronal function. Moreover the tropism of Covid-19 is essentially pulmonary and the hypothesis of this study is with 18F-FDG PET-CT it's possible to study the relationship between cerebral metabolism and the metabolism of pulmonary lesions following Covid-19 infection.
NCT05067400
Prospective, observational SARS-CoV2 serological surveillance single London HIV outpatient center study using NHS participants
NCT05477199
Patients who have undergone COVID-19 infection often have long-term sequelae. One of the most prevalent sequelae is pain. The main objective of this research is to investigate the efficacy of a cognitive behavioral principles-based treatment program in fear avoidance beliefs, disability, pain catastrophizing and pain interference.
NCT04581863
The clinical guidance for 90 percent of infected COVID-19 adult patients who do not meet eligibility for inpatient admission is to self-isolate. To support these patients, alternatives to in-person care are needed to manage an unpredictable clinical course; identify and intercept patients rapidly deteriorating at home, prevent viral spread during in-person visits; and minimize future surges in emergency departments (EDs). In addition, fingertip pulse oximeters have been proposed to improve in-home early detection of respiratory deteriorations but are untested and the operational infrastructure to support large-scale monitoring is limited. While telemedicine has been widely adopted during the pandemic as an alternative to conventional outpatient care, limited telemedicine access may be exacerbating observed disparities for Black and Latino patients. In our health system, Black and Latino patients used video-visits 15 percent less often than white patients. Text messaging and phone calls may improve healthcare access for communities of color, but the evidence for these telecommunication modalities to be effective and improve equity are limited. The University of Pennsylvania Health System (UPHS) developed and deployed COVID Watch to improve access to health care for COVID-19 patients who are self-isolating at home. COVID Watch sends twice-daily, scheduled text messages to assess patients for shortness of breath using a clinical algorithm to determine whether patients need an urgent escalation to a team of dedicated, on-call nurses within one hour. These nurses are supported by an on-call team of clinicians who can conduct urgent phone or video assessments. Patients can also trigger the algorithmic assessment independent of the scheduled messages. As of May 21, 2020, COVID Watch has managed 3,628 COVID-19 patients at home, of which 1,295 are confirmed COVID-19 positive; of these, 61 percent are Black or Latino, higher than the proportion of all UPHS COVID-19 positive patients that are Black or Latino (55 percent).
NCT04738695
Assessment of the seroprevalence and sero-incidence of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) among Nursing Home (NH) residents and staff in Belgium.
NCT05939596
This trial is a phase I clinical trial of a SARS-CoV-2 Bivalent mRNA Vaccine (LVRNA021). The trial used a randomized, blinded, placebo-controlled design to evaluate the safety, tolerability, and preliminary immunogenicity of the trial vaccine in participants Aged 18 Years and Older who had received SARS-CoV-2 Vaccine.
