Active clinical trials for "COVID-19"

The aim of the SARS-CoV-2-CZ-PREVAL-II Study is to quantify the prevalence of participants with antibodies against SARS-CoV-2 and/or cell immunity against SARS-CoV-2 in specific subjects cohorts.

The investigators retrospectively investigate the epidemiology, clinical characteristics and therapeutic interventions of patients with COVID-19 associated respiratory failure admitted to the intensive care units in South Tyrol, Italy.

In Kuwait, the total number of COVID-19 confirmed cases exceeds 5000 patients. Risk factors of possible risk factors of confirmed COVID-19 infection that developed major organ dysfunction are not yet identified among patients in Kuwait. we aimed to describe the clinical characteristics of hospitalized symptomatic COVID-19 positive patients, assess possible risk factors of confirmed COVID-19 infection who developed major organ dysfunction, determine risk factors for renal dysfunction and their outcome and assess the response of critically ill patients to different therapeutic modalities.

The investigators proposed a national representative survey to collect data of socio-demographic characteristics, level of exposure to COVID-19, depression，anxiety， ptsd， burnout and resilience of working anaesthesiologists across mainland China for the following purpose Explore the current burn-out rate of Chinese anaesthesiologists and compared it with data acquired in 2015； Explore the perceived covid-19 exposure of COVID-19 among Chinese anaesthesiologist. Explore rate of burnout, anxiety, depression, PTSD symptoms experienced by the participants Explore the protective psychosocial characteristics of burnout. (resilience) See whether covid-19 exposure contribute to higher burn out rate.

Since the first report of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variant of concern (VOC) P.1 in Manaus, Brazil, a rapid spread of this lineage across the country has been observed. Recent studies indicate that this variant is associated with higher transmissibility; it is not known whether it is associated with clinical severity and higher mortality rates. This is a retrospective cohort study carried out at Hospital de Clínicas de Porto Alegre. Adult patients aged 18 years or more and 65 years or less who were admitted to the hospital due to symptomatic COVID-19 from June 2020 to May 2021 and had a reverse transcriptase-polymerase chain reaction (RT-PCR) cycle threshold value for either SARS-CoV-2 N1 or N2 target ≤ 25 were eligible to the study. Samples from 86 patients (43 from June 2020 to November 2020 and 43 from February 2021 to May 2021) were sequenced for further evaluation. These dates were defined since the emergence of P.1 lineage in late January. Clinical data regarding ventilatory support, date of onset of symptoms, laboratory findings and mortality were collected from each patient. This retrospective cohort aims to assess whether the number of days needed for supplementary oxygen either by noninvasive ventilation or high-flow nasal cannula from onset of symptoms differs among patients infected with the P.1 SARS-CoV-2 variant and those infected with other variants.

The glycocalyx is a membrane coat composed of glycoproteins attached to the surface of cell membranes. Recent publications have drawn attention to the potential role of a degradation of the endothelial glycocalyx (a kind of gel that lines all the vessels of the body) during the SARS-CoV-2 (Severe Acute Respiratory Syndrome - coronavirus 2) epidemic. The work of Yamaoka-Tojo et al. reveals vascular endothelial dysfunction in patients at high risk for developing a severe form of COVID 19. This observation prompts further investigation of vascular endothelial function in SARS-CoV-2-infected patients, and particularly those with long COVID. As of the end of the first COVID-19 epidemic wave in May 2020, persistence of symptoms several weeks or months after the first manifestations of COVID-19 was described in more than 20% of patients after 5 weeks and in more than 10% after 3 months). The term "long COVID" describes this phenomenon of prolonged symptoms following COVID-19. The French National Authority for Health has established criteria to identify people with prolonged symptoms after an initial episode of clinically and/or biologically documented COVID-19: an initial symptomatic episode, the presence of at least one of the initial symptoms beyond 4 weeks after the onset of the acute phase of the disease, and initial and prolonged symptoms not explained by another diagnosis not known to be related to COVID-19. Among the observations reported in patients with long COVID, ophthalmic involvement is poorly described. A team of ophthalmologists of the Rothschild Foundation has demonstrated (using indocyanine green angiography, adaptive optics and optical coherence tomography techniques) disorders of the choroidal circulation, with abnormalities of the vascular walls, presence of "pachyvessels" and "caverns", in COVID-positive patients hospitalized at 6 months of their hospitalization.

A REALLIFE evaluation of rate of hospitalized patients in Intensive Care Units and in medical Units of non -vaccinated patients vs vaccinated patients

The clinical spectrum of COVID-19 can be very heterogeneous: from mild flu-like symptoms, to the form with severe pulmonary impairment (dyspnoea, tachypnoea, PaO2 / FiO2 ratio below 300 at arterial blood gas sampling, pulmonary infiltrates covering more than 50% of the respiratory surface); up to 5% of patients tend to rapidly develop acute respiratory distress syndrome (ARDS) with or without acute cardiac damage, underlying a phase of systemic hyperinflammation (cytokine storm) that may result in shock, multi-organ failure and death

Accuracy validation of the designed and manufactured ELISpot-based in vitro diagnostic 'Corona-T-test' for detection of SARS-CoV-2-specific T cells.

The objective of this single-center retrospective observational study is to describe spirometric abnormalities and their impact on 6-minute walk test (6MWT) and the physical component summary (PCS) of the SF-36 quality of life instrument.at least 3 months later discharge hospital.