View clinical trials related to Covid19.
Filter by:This study seeks to explore immunological mechanisms in patients with Multisystem Inflammatory Syndrome in Children (MIS-C) to improve the understanding of this pathogenesis of this disease. In a cohort of MIS-C patients diagnosed during the Wild type, Alpha, Delta and Omicron waves, research samples will be analyzed for whole-blood RNA expression, proteomics, inflammatory cytokines, cellular immune populations, autoantibodies, as well as host genetic markers.
COVID-19 vaccine response data in children 5 to 11 years old remain scarce. Our understanding of the safety and immune responses including humoral and cellular responses generated in children remains limited. Safety of the vaccine is critical in the risk benefit assessment of vaccination in young children. Available data show a trend for increased risk of myocarditis after second dose, especially in males and younger age groups. It is unknown if reduced antigen dose will alter this risk in 5y to <12y age group. Reassuringly, data from early roll-out in the USA have not reported any safety signals to date. Alternate (reduce dosing or delayed dosing) strategies could help ensure maximum protection with reduced risk of side-effects. There is currently no data available to inform how long protection would last in the reduced dose or delayed dosing strategy. The trial will inform the potential use of alternate dosing schedules such as single dose or delayed dose to minimise risk and maximise benefit of COVID-19 vaccination in children 5 to 11 years old.
This is a multi-centre, observational, non-interventional study, which will prospectively collect clinical and socio-demographic data from patients with depression occurred after COVID 19 in real clinical settings during 8 weeks of treatment. 10 clinics and 10 of psychiatrists and neurologists across the country will participate in the study and it is estimated that each investigating physician will enroll 10 patients.
Patients recovered from mild coronavirus 2019 (COVID-19) disease without pulmonary involvement may experience long-term physical impairment and dyspnea. The investigators aim to characterize physiologic limitations in patients who recovered from mild COVID-19. Methods: Pulmonary function tests (PFTs), 6-minute walk test (6MWT), echocardiography and cardiopulmonary exercise test (CPET) will be completed in patients recovered from mild COVID-19 disease with prolonged dyspnea (Subgroup "A") and compared to patients recovered from moderate/severe COVID-19 (subgroup "B") and to non-COVID-19 patients with unexplained dyspnea (subgroup "C").
An association of fatigue with post-viral neuropsychological disturbs has been reported. Among patients hospitalized with COVID-19 there is an increased incidence of anxiety and depression symptoms. In addition, a quarter of patients experience at least mild symptoms of acute post traumatic stress disorder. (Mazza, M. G. et al 2020). The prevalence of chronic fatigue syndrome had a correlation with post-traumatic stress disorder (PTSD) in a study conducted after the outbreak of the COVID-19 in Iran (Silmani et al, 2021), that showed 5.8% of subjects suffering from PTSD after 6 months of SARS-CoV-2 infection onset. In this Study we propose to use a tool to quantify the degree of physical and psychological fatigue in post-COVID-19 patients, and assess the correlation of fatigue with the neuropsychiatric sequelae in hospitalized and non hospitalized patients.
To follow up the cardiopulmonary function after coronavirus disease 2019 (CoVID-19) infection and compare the effect of a 12-week home-based cardiopulmonary with or without add-on remote rehabilitation on the cardiopulmonary function, emotion and quality of outcome.
Analysis of humoral antibody and cytokine kinetics after vaccination with either BNT162b2 or ChAdOx1 nCoV-19 vaccine and factors influencing the vaccine immunogenicity
Natural infection, vaccines and treatments (like monoclonal antibodies) lead to the appearance of a neutralizing power in the serum (due to induced or injected antibodies). This neutralizing power is recognized as a correlate of protection against a (new) infection. This study aims to measure the neutralizing power of the serum of patients (whether or not they have been infected with SARS-CoV-2) according to the treatments and/or vaccines received and to assess the durability of this power in the time.
COVID-19 vaccines are limited in supply, especially in low- and middle-income countries, leading to substantial morbidity and mortality. Despite the COVID-19 Vaccines Global Access (COVAX) Facility initiated by the WHO to provide vaccine access for low-income countries, probably 80% of the vaccine needs of participating countries will not be met soon. In addition, there is an increasing demand for revaccination of the population globally, because of waning immunity which will further limit vaccine supplies. Exploring dose-sparing techniques, could therefore provide the solution to immunise more people with the same vaccine stockpile. The intramuscular injection (IM) is the standard inoculation route of vaccines. However, the skin (dermis) is much richer in antigen presenting dendritic cells than muscle. As a consequence, a fractional vaccine dose introduced directly into the dermis (intradermal administration, ID) might be as effective as the intramuscular administration of the full standard dose to achieve a protective immune response. This principle has recently been demonstrated for the ID dermal delivery of one-fifth fractional dose mRNA-1273 (Spikevax, Moderna) vaccine. However, needle-based immunisation has several limitations. Fear of needles makes immunisation a stressful event. In addition, needle stick injuries, as well as unsafe injection practices carry serious health risks. Therefore, the development of needle-free delivery has been identified as an important goal in global health care. The WHO reported that microneedle vaccine delivery is top priority and requires additional research to explore the benefits in more detail. A big advantage of intradermal delivery via a solid needle patch is not only the absence of needles and pain since no nerves are at the proximity where the needles are presented, but also the local delivery close to immune cells as with the above mentioned intradermal injection enables a much lower dose as compared to IM dosing. And since with the patch a larger skin surface is involved as compared to intradermal injection, even lower doses are possibly still immunogenic. In this study, we will investigate the immunogenicity and safety in healthy volunteers of the needle-free intradermal delivery of a single fractional dose of 20µg mRNA-1273 LNP vaccine (Spikevax, Moderna) more than 3 months after primary vaccination with Comirnaty (Pfizer) vaccine and/or after having contracted COVID-19.
A cross-sectional descriptive survey of the BOLD for individuals after having been ill with COVID-19 or have taken the COVID-19 vaccine will be compared with that of individuals who have neither been ill with COVID-19 nor taken the COVID-19 vaccine. Individuals who have both been ill and taken the COVID-19 vaccine will be compared to identify any additive risk factors.