Active clinical trials for "COVID-19"

Multicenter observational study of diagnostic test validation (Research Involving the Human Person, type 3) In addition to the diagnosis by the reference method (nasopharyngeal swab), the patient will be asked to provide a saliva sample via a salivary spit. The clinical circumstances of the diagnosis, the age of the patient, the associated terrain (diabetes, immunodepression, pregnancy) will be noted. The nasopharyngeal and saliva samples will be analyzed in Cayenne and the remaining samples will be frozen and stored at the CRB before being sent to the University Hospital of Caen for analysis and concordance verification. The expected benefits are: Possibility of repeating tests in the same person more easily due to the absence of pain and thus reduce the barriers to diagnosis and screening. Possibility of self-sampling, which could simply be sent to the laboratory, which would relieve the diagnostic sites that mobilize staff and require a fairly heavy organization. Avoid long waiting lines that can be an obstacle and lead to a renunciation of the diagnosis.

rates are in such considerable amount among large population base. The pathogenesis of COVID-19 implicates a potent inflammatory response, involving a complex group of mediators including interleukins. These pleiotropic cytokines are secreted at the region of inflammation and released into the circulation by a variety of different cell types, including macrophages, lymphocytes, endothelial cells, epithelial cells during sepsis and acute organ injuries. There has recently found a number of studies reporting that the cytokine storms take part in the course of COVID-19

The Building Resilience and Vital Equity (BRAVE) project seeks to partner with American Indian tribal communities in North Carolina to establish COVID-19 services and resources for American Indian communities. The goal of this study is to 1) understand the barriers and social implications of COVID19 testing and vaccination among American Indians by designing and implementing culturally sensitive survey tools and intervention materials; 2) Implement BRAVE outreach and testing interventions to increase testing in American Indian communities; 3) analyze data and share back with tribal communities to improve perceptions of COVID-19 testing in the AI community and decrease in vaccine hesitancy.

The Covid-19 pandemic and its health and societal consequences raise fears of a deterioration in the management of non-Covid-19 pathologies, particularly those requiring rapid treatment. These fears relate in particular to strokes and acute myocardial infarctions (AMI), the two most frequent diseases, for which emergency treatment is a major factor in the vital and functional prognosis of patients. They are based on activity data from the emergency services, which have shown a sharp drop in admissions for AMI and strokes at the start of the pandemic. This drop is interpreted as being partly linked to a tendency for patients to delay or even give up care, which may be explained by fear of contamination, the desire not to solicit already overworked healthcare professionals and overload in emergency structures. In addition, studies have shown that the time required to treat AMI during the pandemic phase in China has been extended due to the new organizations set up in healthcare institutions in connection with this major health event. In addition, certain inequalities in access to care, already identified during the non- pandemic period among AMI and stroke patients, are likely to be accentuated by the new healthcare organizations set up during the pandemic period. The investigators are interested in the impact of changes in healthcare utilization and reorganization within hospitals, related to the Covid-19 pandemic, on the quality of the care pathway for stroke and AMI patients in the Aquitaine region. The investigators also study the role of the socio-demographic, socio-economic and geographical characteristics of these patients as factors of inequality of access to care during this period. The project is based on data collected within the Aquitaine Cardio-Neuro-Vascular Registries (CNV), an exhaustive cohort of stroke and AMI patients treated by a health care institution in Aquitaine. They are an excellent tool for describing the care pathway and outcomes of these patients, from the onset of symptoms to the end of the acute episode. An additional collection is planned to collect all the organizations and activities set up within the hospitals in Aquitaine. The study period, from January 2019 to August 2020, provides sufficient time before lockdown and after the date of the end of lockdown, to analyze trends in the quality of pathways, according to the various reorganizations of the health system and changes in the use of care linked to the management of the Covid-19 pandemic. The project identifies the reorganizations with the most striking consequences on the quality of care for patients suffering from non Covid-19 pathologies. It analyzes the changes in the behaviour of patients and their family and caregivers in their use of care during the Covid-19 pandemic and their impact on the care pathways and results. It contributes to the policy of reducing inequalities in access to care and to the definition of a health strategy in the event of a major health crisis.

To measure the immunization rate (seroneutralization) in a population of exposed hospital workers (nursing staff assigned to dedicated COVID-19 care units, laboratory staff handling COVID-19 samples).

This is a retrospective observational study in the form of a cohort study evaluating the use of pre-operative imaging for the diagnosis of acute appendicitis in a tertiary centre during the first and second waves of the COVID-19 pandemic in the United Kingdom. The study group includes all patients who underwent emergency appendicectomy for suspected acute appendicitis between March 2020 and February 2021, while the control group includes all patients who underwent emergency appendicectomy for suspected acute appendicitis between March 2019 and February 2020. The final histology will be used as primary outcome, as the study hypothesis is that increasing the use of pre-operative imaging will reduce the negative appendicectomy rate.

The purpose of this study is to evaluate the performance of Freedom For All Diagnostics, Inc.'s colloidal gold immune technology SARS-CoV-2 Antigen investigational assay when compared to a high-sensitivity Emergency Use Authorization (EUA) SARS-CoV-2 RT-PCR assay. The study will evaluate the accuracy in the intended use environment of the SARS-CoV-2 antigen assay when testing is conducted in a CLIA-waived setting (e.g., a physician's office or clinic) by non-laboratory personnel serving in a healthcare facility or setting.

Data on COVID-19 in children are still scarce, and their role in SARS-CoV-2 transmission is poorly described. Furthermore, documentation of the best SARS-CoV-2 sampling methods in children are limited. In adults, saliva seems like a promising specimen to collect by noninvasive procedure to diagnose and monitor viral load of SARS-CoV-2, but this has not been tested in children yet. We want to test the following hypothesis: Shedding load and duration of SARS-CoV-2 in children are related to age, gender, clinical symptoms and exposure Salvia samples have equal or higher sensibility than nasal swaps in children for detection of SARS-CoV-2 Parental home testing of saliva and feces is feasible in children The study is a prospective cohort study of SARS-CoV-2 PCR-positive children from two test centers in the Capital Region of Denmark. Children aged 0-17 years with a PCR-positive SARS-CoV-2 test from a nasal or pharyngeal swab is included from May 2020 to January 2021 and followed-up for a period of 28 days with weekly sample collection and questionnaires. Samples include a saliva sample, a nasal swap and a rectal swap for children under four years of age. A semiquantitative RT-PCR method, will identify positive and negative samples and provide a Ct value estimating viral load. Saliva and fecal samples will be analyzed from November 2020-February 2021. Shedding duration will be related to medial history, clinical presentation, exposure, gender and age.

Severe SARS-CoV-2 disease is characterized by a progressive hypoxemic respiratory failure. Autopsies from these patients show severe endothelial damage with extensive vascular thrombosis, microangiopathy, and occlusion of alveolar capillaries and, finally, evidence of new vessel growth through intussusceptive angiogenesis. This research aims to study endothelial damage and angiogenesis biomarkers and its association with major cardiovascular events.

Children are relatively spared from the direct clinical impact of COVID-19. Pediatric patients with regular follow-up at tertiary pediatric centres and presenting one or more chronic conditions might be at increased risk for severe COVID-19. With a prospective seroprevalence study, we aim to study COVID-19 incidence, disease course and risk factors associated with SARS-CoV-2 infection in this specific context.