Active clinical trials for "COVID-19"

Some people who have been infected with the virus that causes COVID-19 can experience long-term effects from their infection, known as post COVID-19 conditions (PCC) or long COVID1. The medical circles often describe it as post-acute sequelae of Covid-19 (PASC). People with post-COVID conditions can have a wide range of symptoms that can last more than four weeks or even months after infection. Sometimes the symptoms can even go away or come back again. The Centers for Disease and Prevention (CDC) listed a constellation of 19 symptoms related to post COVID-19. In research, brain fog is prominent among the most reported neurological symptoms which also include, numbness, tingling, headache, dizziness, blurred vision, tinnitus, and fatigue that last more than a year post-infection. Vielight Inc. has developed a compact and portable device named the "Vielight RX Gamma", which is suitable for home use. The intervention is based on the science of photobiomodulation (PBM) which utilizes certain light energy to modify cellular functions. The fundamental mechanisms of PBM are based on the absorption of photons by the mitochondria to modulate cellular functions. The Vielight Neuro RX Gamma delivers light of specific wavelengths (810 nm), power and duration to the brain/nasal cavity to achieve this. The biological process involves numerous interacting mechanisms that modulate bodily functions. One result of PBM is the benefits it could offer the post COVID-19 (long COVID) population. The Vielight Neuro RX Gamma emitting NIR might reduce inflammatory markers relevant to COVID-19 and since it pulses at 40 Hz can activate the non-inflammatory M2-genotype microglia to remove markers of Alzheimer disease, such as beta-amyloid and possibly tau deposits. Using Vielight Neuro RX Gamma, the same activation of non-inflammatory markers might occur with post COVID-19 (long-COVID) patient population as well as the reduction in the brain fog. This trial utilizes a completely remote and virtual design. It is a double blind randomized controlled trial that is expected to involve 36 participants who are confirmed to have Post- COVID cognitive impairment. Eighteen of the participants will be randomized to the active Vielight RX Gamma protocol, and the other eighteen participants will be randomized to the sham Vielight RX Gamma regimen. The trial will study patients over 120 days and ask them to track their symptoms in a daily survey.

A Phase I clinical study to evaluate the safety, tolerability, and immunogenicity of SARS-CoV-2 variant (Omicron) mRNA vaccine which is used to prevent COVID-19 caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection.

Observer-blind, randomized, active-controlled prospective intervention study

Over one million Canadians have been infected by COVID-19. Many people who have been infected by COVID-19 experience negative mental symptoms, such as "brain fog" and fatigue. For many of these people, they continue to feel these negative mental symptoms even after recovering from COVID-19. However, scientists still do not know how COVID-19 harms the human brain and causes these mental problems. Our goal is to use advanced brain imaging to determine whether people who have been infected with COVID-19 show damage in their brain. We hope that this information will help doctors determine what treatments should be provided to help people who are suffering from continuing mental problems after being infected with COVID-19.

This trial adopts a randomized, double-blind and positive control design, it is planned to recruit 1800 healthy participants who have been vaccinated with 2/3 doses of COVID-19 inactivated vaccine or mRNA vaccine for 3 months. The participants will be divided into two strata according to the types of vaccines administered, including 900 participants of COVID-19 inactivated vaccine and 900 participants of mRNA vaccine. According to the ratio of 1:1:1, each stratum was randomly assigned to three groups: sequential BIBP- COVID-19 inactivated vaccine (Omicron), WIBP-COVID-19 inactivated vaccine (Omicron) or COVID-19 inactivated vaccine (prototype strain). And according to D0, D28 immunization schedule, two doses of corresponding group vaccines are sequentially administered.

The study was designed to analyze the efficacy and safety of Paxlovid for the treatment of COVID-19.

The present retrospective and prospective observational study aims at evaluate the clinical predictors of myocardial injury in patients hospitalized for COVID-19 infection since the introduction of vaccines that could allow the development of predictive models as well as help clinicians in the early assessment of the risk of myocardial injury and the prevention of the associated unfavourable outcomes. Furthermore, this study will characterize the cardiovascular outcomes in the post-acute COVID-19 phase, and it will evaluate for the first time the long-term clinical outcomes of patients who experienced myocardial injury, possibly paving the way for the implementation of specific therapies aiming to reduce the cardiovascular risk and the long- term sequelae of COVID-19.

After almost 2 years of pandemic, the consequences of the post-COVID syndrome, or PASC (Post Acute-Sequelae of Sars-CoV-2), have become a major challenge in the management of affected patients, generating costs for health services. and insecurity regarding treatments for the sequelae, given the complex and still poorly understood pathophysiology of COVID-19. This troubling scenario raises important questions about the impact of COVID-19 on central nervous system sequelae, including the risk of cognitive decline in old age and progression to dementia. Therefore, studies that propose the possibility of treatment for this new clinical condition and that are free from systemic side effects, such as transcranial direct current stimulation (tDCS) and cognitive treatment, are extremely important in the face of this scenario. In addition, the evaluation of the neural mechanisms underlying the cognitive alterations of the PASC syndrome and after the treatment using multimodal magnetic resonance imaging (MRI) becomes relevant in view of the lack of studies related to the topic. Therefore, the objective of this double-blind randomized clinical trial is to assess whether tDCS associated with cognitive training can improve symptoms in patients with persistent cognitive deficits that started between 1 and 6 months after the resolution of acute COVID-19 infection (PASC) compared to the sham (placebo) group, in addition to exploring the structural, microstructural, functional and modeled electric field changes associated with cognitive alterations due to PASC syndrome and tDCS combined with cognitive treatment. 60 patients aged between 18 and 70 years and with a positive diagnosis of mild to moderate COVID-19 in the last 6 months in relation to the time of entry into the study will be recruited. All of them will be pre-screened online and in person to confirm the cognitive dysfunction associated with PASC.

Severe acute respiratory syndrome coronavirus 2-mediated coronavirus disease (COVID-19) is an evolutionarily unprecedented natural experiment that causes major changes to the host immune system. We propose to develop a test that accurately predicts short- and long-term (within one-year) outcomes in hospitalized COVID-19 patients broadly reflecting US demographics who are at increased risk of adverse outcomes from COVID-19 using both clinical and molecular data. We will enroll patients from a hospitalized civilian population in one of the country's largest metropolitan areas and a representative National Veteran's population.

Eighty percent of the Dutch population has completed a primary COVID-19 vaccination regimen, and 60% of the population received a booster vaccination. Waning immunity, combined with the emergence of antigenically distinct SARS-CoV-2 variants, has led to the consideration of additional booster vaccinations in the Dutch population by autumn 2022. However, despite efforts of the Dutch policymakers, the public's willingness to repeatedly receive COVID-19 booster vaccinations is declining. This is mainly due to a reduced burden of disease by COVID-19, fewer hospitalizations, and fewer deaths. However, population immunity might be one of the major factors responsible for this reduced burden of disease, possibly emphasizing the need for booster vaccinations. In this proposal we will address an important question asked by policymakers: "Are booster vaccinations in autumn recommended for the healthy population?"