View clinical trials related to Covid19.
Filter by:SARS-CoV-2 infection in pregnancy is associated with an increased risk of adverse maternal and perinatal outcomes. One explanation is that the infection might increase the existing pregnancy-associated prothrombotic status, leading to a higher risk of placental and vascular complications. Administration of low-dose acetylsalicylic acid (LDASA) has shown to improve maternal and perinatal outcomes in women at high-risk of endothelial and placental complications. However, there are no data on the effect of LDASA in preventing complications in SARS-CoV-2- infected pregnant women. To reduce SARS-CoV-2- related complications in a highly vulnerable group to the infection, we will carry out this randomized, double-blind, placebo-controlled multicentre trial in 400 SARS-CoV-2-infected pregnant women. The study main objective is to evaluate the efficacy and safety of LDASA administered up to 36 weeks of gestation in SARS-CoV-2-infected pregnant women in reducing the incidence of adverse maternal and perinatal outcomes. Pregnant women tested positive up to 32 weeks of gestation with a SARS-CoV-2 rapid antigen or PCR test and agreeing to participate, will be randomised 1:1 to receive daily LDASA (125 mg) or placebo up to 36 weeks of gestation and be followed-up until delivery.
The 2019-coronavirus disease (COVID-19), caused by SARS-CoV-2, was identified as the source of pneumonia cases in Wuhan city in China. It rapidly spread worldwide and was declared by WHO as a pandemic. COVID-19 vaccines are expected to be the breakthrough in controlling the pandemic. However, studies performed only in healthy adults, and specifically excluded patients who were under immunomodulatory/biologic therapy, thus excluding patients with chronic inflammatory diseases (IBD). In this study we wish to understand vaccine efficacy and immunological response in IBD patients.
A web-based survey will be emailed to all adult women diagnosed with invasive breast cancer or ductal carcinoma in situ who have been seen as surgical consultations within the last year (06/01/19-06/01/20).
This study assesses the level of distress felt by cancer patients due to the coronavirus disease 2019 (COVID-19) pandemic. Researchers also want to learn if patients prefer to receive supportive care (palliative care) in person or through telemedicine (visits by phone or video call, such as Zoom). Information from this study may help doctors better understand how COVID-19 has affected patients with advanced cancer, patients' perceptions of telehealth, and may help clinicians tailor care to patients' needs during the pandemic.
300 adults ≥30 years of age who have previously received two doses of an inactivated COVID-19 vaccine at least 3 months earlier will receive a third dose with an mRNA vaccine (BNT162b2, BioNTech). Investigators will monitor reactogenicity and measure the immune response to the third dose.
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.
Coronavirus disease 2019 (COVID-19) which is caused by the virus SARS-CoV-2 has resulted in an ongoing global pandemic. It is unclear whether the relatively low number of reported cases of COVID-19 in people with CF (pwCF) is due to enhanced infection prevention practices or whether pwCF have protective genetic/immune factors. This study aims to prospectively assess the proportion of pwCF, including both adults and children with CF who have evidence of SARS-CoV-2 antibodies over a two-year period. This study will also examine whether pwCF who have antibodies for SARS-CoV-2 have a different clinical presentation and what impact this has on their CF disease. The proposed study will recruit pwCF from paediatric and adult CF centres in Europe. Serological testing to detect antibodies will be performed on blood samples taken at month 0, 6, 12, 18 and 24 with additional time-points if bloodwork is available via normal clinical care. Clinical data on, lung function, CF-related medical history, pulmonary exacerbations, antibiotic use, and microbiology and vaccination receipt, will be collected during routine clinical assessments. Associations will be examined between socio-demographic and clinical variables and serologic testing. The effects of SARS-CoV-2 infection on clinical outcomes and analyse end-points will be examined to explore any age-related or gender-based differences, as well as subgroup analysis of outcomes in lung-transplant recipients and pwCF receiving CFTR modulator therapies. As pwCF receive COVID-19 vaccination a comparison of the development and progression of anti-SARS-CoV-2 antibodies in pwCF following natural infection and vaccination SARS-CoV-2 over time will be performed.
The main objectives of this study are to assess the safety, tolerability and immunogenicity of the candidate SARS-CoV-2 vaccine, COVIDITY, when administered using a needle-free ID or IM injection device.
Blockchain technology has gained attention for its decentralized feature and data integrity. The study aims to apply blockchain technology to implement dynamic consent model and evaluate the real-world experience as a form of virtual clinical trial.
The investigators hypothesize that children are less likely to become infected in the school environment, compared to the household or outside the school setting. Primary schools do not play a major role in SARS-CoV-2 spreading. They hypothesize that incidence level in schools is mainly a consequence of community transmission. The incidence level in household and that the secondary attack rate in schools remains at least 5 times lower that the transmission level in households.