Active clinical trials for "COVID-19"

The main clinical manifestation associated with SARS-CoV-2 infection is an influenza-like illness that follows the infection of the respiratory tract. In a few percent of infected people, inflammation of the lungs leads to severe pneumonia that requires hospitalization, in intensive care units for the more severe cases. Despite intensive care, a fatal outcome occurs in 6% and 12% of women and men over 80 years of age hospitalized for severe COVID, respectively. Factors associated with a higher risk of death in patients with SARS-CoV-2 include age and low circulating lymphocyte counts. Significant lymphopenia is indeed frequently observed in patients with severe COVID-19 and both phenotypic and functional changes in antiviral T cells have been correlated with the severity of COVID-19. The thymus, the organ that produces T lymphocytes, undergoes progressive physiological involution with age. However, in the elderly, rare cases of thymic hyperplasia are reported in autoimmune diseases or cancers, or are observed in response to deep lymphopenia, whether or not associated with sepsis. This cohort of patients treated for a SARS-CoV-2 infection could allow to better understand the role of the thymus in this pathology.

The oral cavity is particularly susceptible to viral infection with several viruses such as herpes simplex virus, cytomegalovirus and Zika virus because of its structures, especially salivary glands and soft tissues Moreover, oral mucosa can be affected by secondary pathological process of a bacterial or fungal nature due to viral immunosuppression. The oral cavity could be considered a "biological barometer" of both viral infection and viral immunosuppression advancement .

COVID-19 has been a challenge for hospitals; there was an obvious need to reconvert many spaces in specific areas to attend this pathology, without forgetting the attention to other pathologies and surgery. The objective of the investigators is to evaluate the impact of this pandemic in the patients who underwent surgery in Bellvitge University Hospital, analyzing 2 periods of time: the months before the COVID-19 peak and the COVID-19 peak months.

The medical charts of all COVID-19 cases (n=1200) from 17 long-term care facilities in Montreal, Canada will be reviewed, to compare patients who survived to patients who did not survive. Through multilevel logistic regression, the risk of death will be estimated for institutional predictors of mortality, while controlling for individual risk factors. Individual covariates include clinical features (age, sex, Charlston comorbidity index, SMAF autonomy score, severity criteria) and medical treatments (IV fluids, anticoagulation, oxygen, regular opiates, corticosteroids). Aggregate covariates include epidemiological data (attack rates, timing of outbreak) and institutional characteristics (number of beds, air exchange per hour, presence of a dedicated COVID-19 unit at the time of outbreak, staff compliance to infection control measures, staff infection rates, understaffing, proportion of semi-private rooms, proportion of wandering wards and other special units).

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.

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.

The study includes patients over 18 years old who were hospitalized in our covid intensive care unit between March 16 and May 16, 2020. Retrospective records were examined by examining the electronic data files of the patients. Polymerase Chain Reaction (PCR) tests performed with nasopharyngeal swab taken from the person, which is the standard diagnostic method, and also the diagnosis of infection symptoms, risk factors and thoracic CT scans indicating pneumonia were diagnosed. Patients over 18 years of age with and without a medical history of DM in their history were identified and compared in 2 groups.

Prospective study to describe the immunological, metabolic and serologic profile in the acute and post acute phases of Coronavirus disease (COVID-19)

A SARS-CoV-2 infection emerged in China in December 2019, the severity of which is linked to acute respiratory distress syndrome1. The rate of emergency visits in Bas-Rhin for suspected Covid-19 increased, compared to the French average, at the end of the 10th week of 2020. Compared to the onset of symptoms, Chinese studies estimate the onset of dyspnea on the 7th day3 and admission to the emergency room between the 5th and the 9th day4. But this duration varies according to the epidemic period5, the geographical location6 and a later emergency admission is associated with an increase in mortality in the Chinese population7. The need for oxygen, which is not noted in Chinese studies8, is a reflection of the onset of respiratory worsening and a major factor in hospitalization. There is no study on the changing profile of the French population to date its onset.

A coronavirus pandemic began on 12/31/2019 with a first Chinese patient. As of 04/04/2020, the epidemic affects more than 190 countries with more than 50 million official contaminations and 1,251,000 deaths. (Univ J Hopkins). This virus causes a pathology ranging from simple flu-like symptoms in 80% of cases to acute respiratory distress syndromes requiring intensive care in 5% of cases and a death rate of 1.4 to 4% of cases. Viral contamination is airborne and fecal A first epidemic wave crossed France in March / April 2020 then a second in October / November with a source of contamination which began in mid-August 2020. The sources of propagation are not well known (what places, what times, what contacts…? ) In the context of the health crisis linked to the coronavirus, knowledge of the sources of propagation of this 2nd wave is an important issue to guide end of lockdown and second lockdown policies.